Domain: Healthcare — Pharmaceutical Chemistry
Target concept: Adrenaline Detection

Video generation prompt: Two transparent beakers are placed side by side on the table. The beaker on the left contains an appropriate amount of adrenaline solution exposed to air, while the beaker on the right contains an equal volume of the same adrenaline solution, sealed inside a clear, airtight container. The scene is continuously recorded over several hours, shown as a short time-lapse clip of about ten seconds.

Evaluation guide:
(i) Target concept: Oxidative degradation of adrenaline under ambient conditions requires molecular oxygen as reactant.
Minimum mechanism: Adrenaline must be chemically unstable in presence of O₂ but stable under anaerobic conditions; brown color is a direct, irreversible, and visually specific marker of adrenochrome formation; no catalyst, light, or temperature variation is required beyond standard lab conditions.
(ii)Storyline: Frame 0–2: Two identical colorless solutions in side-by-side beakers; right beaker fully enclosed by sealed container; left beaker fully open. Frame 3–7: Brown hue appears exclusively in left beaker, initiating at surface/air interface and deepening progressively; right beaker remains uniformly colorless. Frame 8–10: Brown color persists and intensifies in left beaker; sealed container remains intact and occlusive; no discoloration in right beaker. Perspective: Fixed frontal medium shot, full beaker height visible, no obstructions, consistent lighting from upper front.

Manual:
Experimental Procedure
1. Place two identical transparent beakers side-by-side on a flat table.
2. Fill both beakers with equal volumes of freshly prepared adrenaline solution (colorless at start).
3. Leave left beaker fully uncovered and exposed to air.
4. Completely enclose right beaker with an airtight sealed container.
Observation of Experimental Phenomena
The left beaker"s solution gradually develops brown coloration over time; the right beaker"s solution remains colorless throughout.
Summary of Experimental Principles
Adrenaline undergoes autoxidation when exposed to atmospheric oxygen and light, forming adrenochrome (brown pigment). Exclusion of oxygen via sealing prevents this reaction.

Prompt Grounding rubric:
level_1: Only one beaker appears, or neither beaker is visible; the two beakers are not shown side by side on the table; one or both beakers contain no visible liquid; the right-hand solution has no enclosure shown around it at all.
level_2: Both beakers are shown on the table, but not positioned side by side (e.g., stacked or far apart); or one beaker holds liquid while the other is empty; or the right beaker's enclosure is missing, sits beside rather than around the beaker, or is opaque/frosted so its contents cannot be seen.
level_3: Two transparent beakers sit side by side on the table; both hold the same apparent volume of clear liquid; the right beaker is fully surrounded by a distinct, visibly closed enclosure (lid, cap, or wrapped seal); the left beaker has an open top with nothing covering it.
level_4: Everything required for level 3 is present, and in addition: the right beaker's enclosure shows no visible gap, crack, or open seam anywhere along its edge; the left beaker's open top is completely unobstructed: no lid, film, or partial cover; both beakers match each other in shape and material (e.g., both clear glass or both clear plastic).
level_5: Everything required for level 4 is present, and in addition: the right beaker's enclosure stays clear and see-through for the entire time-lapse clip (e.g., a transparent screw-cap lid with a visible threaded seal, or clear plastic wrap stretched taut with a visible seal line), so the solution inside stays visible at all times; the left beaker's liquid shows no condensation, meniscus distortion, or surface film that would hint at the outcome before it happens; both beakers keep the same fill level and the same meniscus shape throughout the roughly ten-second clip.

Scientific and Causal Correctness rubric:
level_1: Neither beaker changes color; or both beakers turn brown at the same time; or the left (open) beaker stays colorless while the right (sealed) beaker turns brown; or a brown tint is already present before the clip begins; or the sealed right beaker shows any brown color at any point.
level_2: The left beaker shows some color change (yellow, pink, orange, or brown) while the right stays colorless, or the reverse happens (right changes, left doesn't), or both beakers change color together at the same rate and shade with no visible difference between them.
level_3: The left beaker's solution, colorless at the start, visibly develops a brown tint as the clip progresses; the right beaker's solution stays colorless for the entire clip; the brown tint never appears in the right beaker at any point.
level_4: Everything required for level 3 is present, and in addition: the brown tint in the left beaker deepens steadily without fading, flickering, or disappearing partway through; neither beaker shows cloudiness, floating particles, or a separated layer that isn't part of the browning itself.
level_5: Everything required for level 4 is present, and in addition: the brown tint visibly starts at the liquid's surface in the left beaker and spreads downward, consistent with oxygen acting at the air-liquid interface; the right beaker still shows no trace of color at the final frame; the brown color reads as genuine liquid discoloration rather than a lighting effect, reflection, or color cast from the surroundings.

Spatiotemporal Consistency rubric:
level_1: One or both beakers jump to a new spot or vanish and then reappear between frames; the tabletop visibly warps, cracks, or changes texture; the lighting suddenly switches between dark and bright within a single frame; the camera cuts, snaps to a new angle, or zooms abruptly instead of holding steady.
level_2: The beakers drift apart, drift together, or rotate relative to each other with no visible cause; the enclosure appears to move independently of the right beaker instead of staying fixed to it; a liquid surface looks perfectly rigid with no meniscus, or ripples far more than a still liquid should.
level_3: Both beakers stay in the same spot and orientation for the whole clip; the enclosure keeps fully surrounding the right beaker in every frame; the tabletop and background stay unchanged; the light source's direction and brightness stay the same from frame to frame; both liquid surfaces keep a normal meniscus curve and otherwise sit still.
level_4: Everything required for level 3 is present, and in addition: neither beaker's edges nor the liquid surfaces flicker or shimmer unnaturally between frames; the enclosure's rim lines up with the right beaker's rim consistently across frames rather than sliding out of alignment; the shadows each beaker casts stay pointed in the same direction and keep the same shape as the lighting implies.
level_5: Everything required for level 4 is present, and in addition: any ripple or shimmer on the liquid surfaces looks like ordinary still-liquid movement rather than an obviously synthetic or repeating texture; the enclosure keeps the right beaker's opening fully covered in every single frame with no frame showing a gap or unsealed edge; neither beaker shows any bending, stretching, or see-through glitching of its glass walls.