{
 "label": "full-catalogue__express__haiku-5-5__run3",
 "task": "T1",
 "format": "express",
 "model_id": "claude-haiku-5-5",
 "messages": [
  {
   "version": "v0.9.1",
   "create_surface": {
    "surface_id": "main",
    "catalog_id": "https://a2uicatalog.ai/catalog/a-full.json"
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   "version": "v0.9.1",
   "update_components": {
    "surface_id": "main",
    "components": [
     {
      "id": "title",
      "component": "heading",
      "text": "The Water Cycle"
     },
     {
      "id": "intro",
      "component": "body",
      "text": "Water moves continuously between the oceans, the atmosphere, and the land. In this lesson you will learn the three main stages and work through one example."
     },
     {
      "id": "s1h",
      "component": "subheading",
      "text": "1. Evaporation"
     },
     {
      "id": "s1b",
      "component": "body",
      "text": "The Sun heats water at the surface of oceans, lakes, and rivers. Some molecules gain enough energy to escape as water vapour into the air."
     },
     {
      "id": "s2h",
      "component": "subheading",
      "text": "2. Condensation and precipitation"
     },
     {
      "id": "s2b",
      "component": "body",
      "text": "As warm, moist air rises it cools. Water vapour condenses onto tiny dust particles to form clouds. When droplets grow heavy enough, they fall as precipitation."
     },
     {
      "id": "s3h",
      "component": "subheading",
      "text": "3. Collection and runoff"
     },
     {
      "id": "s3b",
      "component": "body",
      "text": "Precipitation collects in rivers, lakes, groundwater, and oceans. Water that soaks into the ground can be taken up by plants and released again through transpiration."
     },
     {
      "id": "ex_h",
      "component": "subheading",
      "text": "Worked example"
     },
     {
      "id": "ex_steps",
      "component": "steps",
      "items": [
       {
        "label": "Start",
        "text": "A shallow pond holds 10 L of water in the sun."
       },
       {
        "label": "Evaporation",
        "text": "Heat turns 4 L into vapour, which rises into the air."
       },
       {
        "label": "Condensation",
        "text": "The vapour cools and forms a cloud. Later, 4 L falls as rain onto a river."
       },
       {
        "label": "Collection",
        "text": "The river carries that water downstream to the sea, completing the cycle."
       }
      ]
     },
     {
      "id": "quiz",
      "component": "quiz_set",
      "title": "Self-check",
      "questions": [
       {
        "question": "What drives evaporation?",
        "options": [
         "Gravity pulling water down",
         "Heat energy from the Sun",
         "Wind blowing over rivers",
         "Plants releasing oxygen"
        ],
        "correct": 1,
        "explanation": "The Sun's heat gives water molecules enough energy to become vapour."
       },
       {
        "question": "How do clouds form?",
        "options": [
         "Water vapour freezes on the ground",
         "Water vapour cools and condenses onto particles",
         "Rain is pushed up into the sky",
         "Rivers evaporate above 100 degrees"
        ],
        "correct": 1,
        "explanation": "Rising air cools, and the vapour condenses onto dust particles to form droplets."
       },
       {
        "question": "Which process returns water from plants to the atmosphere?",
        "options": [
         "Precipitation",
         "Runoff",
         "Transpiration",
         "Condensation"
        ],
        "correct": 2,
        "explanation": "Transpiration is the release of water vapour through plant leaves."
       }
      ],
      "pass_score": 70,
      "accent": "#0e7bb8"
     },
     {
      "id": "root",
      "component": "reveal",
      "animation": "fade_up",
      "blocks": [
       "title",
       "intro",
       "s1h",
       "s1b",
       "s2h",
       "s2b",
       "s3h",
       "s3b",
       "ex_h",
       "ex_steps",
       "quiz"
      ]
     }
    ]
   }
  }
 ]
}