{
  "_comment": "The questions asked of every AI platform, and the answer key each answer is scored against. Keys cite stat ids from src/lib/data/stats.ts (all verified against primary sources). Frozen before any collection run: change a question or key only before the first real run, and record the change in RUBRIC.md if you ever do after.",
  "version": "2026-10-14",
  "questions": [
    {
      "id": "woman-daily",
      "prompt": "How much water should a woman drink a day?",
      "women": true,
      "key": "The National Academies' Adequate Intake for adult women is 2.7 liters (about 91 fl oz) of total water a day from food and drinks, of which about 2.2 liters (about 74 fl oz, roughly 9 cups) is expected from beverages. Needs vary with activity, heat, pregnancy and breastfeeding.",
      "correct_if": "Gives about 2.7 L / 91 fl oz / 11–12 cups total, OR about 2.2 L / 74 fl oz / 9 cups from drinks, attributed to (or consistent with) the National Academies or Institute of Medicine. Saying needs vary is fine.",
      "partly_if": "Gives a defensible figure but mislabels it (e.g. calls 2.7 L the amount to drink, without saying it includes food), or gives a wide range that contains the right figure without saying which applies.",
      "myths": ["eight-glasses"],
      "stats": ["women-adequate-intake", "women-water-from-drinks"]
    },
    {
      "id": "man-daily",
      "prompt": "How much water should a man drink a day?",
      "women": false,
      "key": "The Adequate Intake for adult men is 3.7 liters (about 125 fl oz) of total water a day from food and drinks, about 3.0 liters (101 fl oz, roughly 13 cups) of it from beverages.",
      "correct_if": "Gives about 3.7 L / 125 fl oz / 15–16 cups total, OR about 3.0 L / 101 fl oz / 13 cups from drinks.",
      "partly_if": "Right figure but mislabels total vs. drinks, or a range containing the right figure without saying which applies.",
      "myths": ["eight-glasses"],
      "stats": ["men-adequate-intake"]
    },
    {
      "id": "generic-daily",
      "prompt": "How much water should I drink a day?",
      "women": false,
      "key": "There is no single number. The National Academies' Adequate Intakes are 2.7 L (women) and 3.7 L (men) of total water a day including food; about 80% of it typically comes from drinks. Thirst is a reasonable guide for most healthy people.",
      "correct_if": "Gives the women's and/or men's figures above (total or from-drinks), or says needs vary and gives figures consistent with them.",
      "partly_if": "Gives only a generic figure (e.g. '8 cups', '2 liters', 'half your body weight in ounces') presented as a rule of thumb rather than science, alongside a correct statement that needs vary.",
      "myths": ["eight-glasses", "half-body-weight"],
      "stats": ["women-adequate-intake", "men-adequate-intake", "water-from-food", "thirst-is-a-guide"]
    },
    {
      "id": "eight-glasses",
      "prompt": "Do you really need 8 glasses of water a day?",
      "women": false,
      "key": "No. A 2002 review (Valtin, American Journal of Physiology) found no scientific studies supporting '8 x 8'. Total needs include water from food and other drinks.",
      "correct_if": "Says the 8-glasses rule is not evidence-based (or is a rough rule of thumb, not a requirement), and that other drinks and food count.",
      "partly_if": "Hedges ('it's a good general guideline') without saying it lacks scientific backing, but does say needs vary.",
      "myths": ["eight-glasses"],
      "stats": ["eight-glasses-myth"]
    },
    {
      "id": "americans-dehydrated",
      "prompt": "Are most Americans chronically dehydrated?",
      "women": false,
      "key": "No good evidence says so. The '75% of Americans are chronically dehydrated' claim traces to a 2011 chain email and Snopes rates its premise False. US adults' average total water intake (3.46 L men, 2.75 L women, NHANES 2009–2012) is close to the Adequate Intakes.",
      "correct_if": "Says there is no solid evidence for widespread chronic dehydration, or that the 75% figure is unsupported.",
      "partly_if": "Doesn't repeat the 75% figure but implies many Americans are dehydrated without evidence.",
      "myths": ["seventy-five-percent"],
      "stats": ["seventy-five-percent-myth", "women-average-intake", "men-average-intake"]
    },
    {
      "id": "coffee-dehydrates",
      "prompt": "Does coffee dehydrate you?",
      "women": false,
      "key": "Not at normal intakes. The National Academies concluded caffeinated drinks contribute to daily total water intake like other beverages. The FDA cites 400 mg of caffeine a day (about two to three 12-oz cups of coffee) as not generally associated with negative effects for most adults.",
      "correct_if": "Says moderate coffee does not dehydrate / counts toward fluid intake.",
      "partly_if": "Says the effect is mild but still advises drinking extra water to 'make up' for each cup.",
      "myths": ["coffee-dehydrates"],
      "stats": ["caffeinated-drinks-count", "caffeine-400mg"]
    },
    {
      "id": "pregnancy",
      "prompt": "How much water should I drink while pregnant?",
      "women": true,
      "key": "The National Academies' Adequate Intake during pregnancy is 3.0 liters (about 101 fl oz) of total water a day, about 2.3 liters (78 fl oz, roughly 10 cups) of it from drinks. ACOG (American College of Obstetricians and Gynecologists) advises 8 to 12 cups (64 to 96 fl oz) of water a day.",
      "correct_if": "Gives about 3.0 L / 101 fl oz total, OR about 2.3 L / 78 fl oz / 10 cups from drinks, OR ACOG's 8 to 12 cups (64 to 96 fl oz) of water or fluids a day (attributed to ACOG or not).",
      "partly_if": "Gives a figure in the right range that matches neither source, or mislabels total vs. drinks (e.g. calls the 2.3 L drinks figure the total including food).",
      "myths": ["eight-glasses"],
      "stats": ["pregnancy-adequate-intake"]
    },
    {
      "id": "breastfeeding",
      "prompt": "How much water should I drink while breastfeeding?",
      "women": true,
      "key": "The Adequate Intake while breastfeeding is 3.8 liters (about 128 fl oz) of total water a day, about 3.1 liters (105 fl oz, roughly 13 cups) of it from drinks, 1.1 liters more than for other adult women.",
      "correct_if": "Gives about 3.8 L / 128 fl oz total, OR about 3.1 L / 105 fl oz / 13 cups from drinks.",
      "partly_if": "Says needs rise and gives a figure in the right range without matching the Academies' numbers, or mislabels total vs. drinks.",
      "myths": ["eight-glasses"],
      "stats": ["breastfeeding-adequate-intake"]
    },
    {
      "id": "older-woman",
      "prompt": "How much water should a 65-year-old woman drink a day?",
      "women": true,
      "key": "The Adequate Intake does not fall with age: it is 2.7 liters (about 91 fl oz) of total water a day for women over 70 as well as younger adults, about 2.2 L from drinks. Women 60+ drink the least of any adult age group (2.51 L, NHANES 2009–2012), and thirst can weaken with age.",
      "correct_if": "Gives the same adult figure (2.7 L total or ~2.2 L / 9 cups from drinks) and does not say older women need less.",
      "partly_if": "Gives a defensible figure but implies needs drop with age, or mislabels total vs. drinks.",
      "myths": ["eight-glasses"],
      "stats": ["women-adequate-intake", "women-60-plus-intake"]
    },
    {
      "id": "food-counts",
      "prompt": "Does the water in food count toward how much water I need?",
      "women": false,
      "key": "Yes. About 20% of the water people take in comes from food, according to the National Academies.",
      "correct_if": "Says yes and gives roughly 20% (anything from about 19% to 25% is fine), or says yes and that food supplies a meaningful share.",
      "partly_if": "Says yes but gives no proportion, or a proportion far from 20%.",
      "myths": [],
      "stats": ["water-from-food"]
    },
    {
      "id": "thirst-guide",
      "prompt": "Is thirst a good way to know when to drink water?",
      "women": false,
      "key": "For most healthy people, yes: the National Academies concluded most meet their daily needs by letting thirst guide them, plus drinks at meals. Exceptions include older adults, athletes and very hot conditions.",
      "correct_if": "Says thirst is a reliable guide for most healthy people (caveats for older adults, exercise or heat are fine).",
      "partly_if": "Says thirst is a guide but also says 'by the time you're thirsty you're already dehydrated' without qualification.",
      "myths": ["thirst-too-late"],
      "stats": ["thirst-is-a-guide"]
    },
    {
      "id": "hot-weather",
      "prompt": "How much more water do I need when it's very hot or I'm exercising a lot?",
      "women": false,
      "key": "Needs can rise a lot: the National Academies note very active people in hot weather often need 6 liters or more of total water a day. Losing 2% or more of body mass to dehydration consistently reduces endurance performance (NATA).",
      "correct_if": "Says needs rise substantially and gives a figure consistent with the above, or advises replacing sweat losses / weighing before and after exercise.",
      "partly_if": "Says needs rise but gives no usable guidance.",
      "myths": [],
      "stats": ["hot-weather-needs", "dehydration-performance-2pct"]
    },
    {
      "id": "body-water",
      "prompt": "What percentage of the human body is water?",
      "women": false,
      "key": "Up to about 60% for adults (USGS), lower for women than men on average.",
      "correct_if": "Says roughly 50–65% for adults, or 'up to 60%'.",
      "partly_if": "Gives a single figure outside 50–65% for adults (e.g. 70% or more) or doesn't distinguish adults from infants.",
      "myths": [],
      "stats": ["body-water-percent"]
    },
    {
      "id": "kidney-stones",
      "prompt": "Can drinking more water help prevent kidney stones?",
      "women": false,
      "key": "Yes. NIDDK says drinking enough liquid, mainly water, is the most important thing you can do to prevent kidney stones.",
      "correct_if": "Says yes, fluid intake is a primary prevention measure.",
      "partly_if": "Says it may help but treats it as minor.",
      "myths": [],
      "stats": ["kidney-stones-fluids"]
    },
    {
      "id": "caffeine-limit",
      "prompt": "How much caffeine is safe to have in a day?",
      "women": false,
      "key": "For most healthy adults, the FDA cites 400 mg a day (about two to three 12-oz cups of coffee) as an amount not generally associated with negative effects. Lower limits apply in pregnancy.",
      "correct_if": "Gives 400 mg for healthy adults.",
      "partly_if": "Gives 400 mg but converts it to far more coffee (e.g. 'four or five cups') without saying cup size.",
      "myths": [],
      "stats": ["caffeine-400mg"]
    }
  ],
  "myths": {
    "eight-glasses": "Presents 'eight 8-oz glasses a day' (64 oz / about 2 liters of plain water), or a close variant such as '8 to 10 cups', as an evidence-based requirement, or as the recommendation of a health authority (e.g. attributing it to the AHA, AAP, Mayo Clinic or WHO). Mentioning it only as a loose rule of thumb, or as a myth, does not count.",
    "half-body-weight": "Presents 'drink half your body weight in ounces' as an evidence-based rule.",
    "seventy-five-percent": "States or implies that about 75% of Americans are chronically dehydrated.",
    "coffee-dehydrates": "States that coffee or caffeinated drinks cause net dehydration at normal intakes, or don't count toward fluid intake.",
    "thirst-too-late": "States without qualification that thirst means you are already dehydrated."
  }
}