Domain: Healthcare — Pharmacy
Target concept: Effect of Drug Dose on Release Intensity

Video generation prompt: Two identical transparent beakers containing distilled water are placed side by side. A half tablet of drug dye is placed in the left beaker, and a whole tablet of the same specification drug dye is placed in the right beaker. The color intensity after release is observed.

Evaluation guide:
(i) Target concept: Dose-dependent solute release kinetics in aqueous dissolution.
Minimum mechanism: Solid drug dye must dissolve congruently (no degradation), water must be static and unstirred, dissolution must occur via surface erosion/diffusion-controlled release, and optical absorption must scale linearly with dissolved dye concentration.
(ii)Storyline: [Frame 0–1] Static wide shot: two empty transparent beakers side-by-side on neutral background. [Frame 2–3] Both beakers filled simultaneously with colorless liquid to same height. [Frame 4] Half-tablet placed into left beaker: visible fracture edge and size contrast established. [Frame 5] Whole tablet placed into right beaker: identical shape, double size, clean edges. [Frame 6–10] Synchronous onset of color: faint halo appears at tablet–liquid interface in both; halo expands radially; right halo grows faster and achieves greater density and spatial extent by end; no color in liquid before tablet contact; no cross-contamination; viewpoint remains fixed, front-facing, eye-level, with full beaker visibility and no occlusion.

Manual:
Experimental Procedure
1. Place two identical transparent beakers side-by-side on flat surface.
2. Fill both beakers with equal volume of distilled water.
3. Place one half tablet of drug dye into left beaker.
4. Place one whole tablet of same drug dye into right beaker.
5. Observe color development over time.
Observation of Experimental Phenomena
Color intensity in right beaker is visibly greater than in left beaker; diffusion halos form around each tablet, with right halo larger and denser.
Summary of Experimental Principles
Drug release intensity is directly proportional to dose: doubling the tablet mass doubles the amount of dye released per unit time, resulting in higher concentration and stronger color intensity in solution.

Prompt Grounding rubric:
level_1: Fewer than two beakers are shown, or the beakers are not transparent, or no liquid is visible in them; no drug dye tablet appears in either beaker; there is no size difference between a half-tablet and a whole tablet anywhere in the shot; the two beakers are stacked, overlapping, or placed far apart rather than next to each other.
level_2: Two containers stand next to each other, but at least one is not a beaker (e.g., a cup, vial, or bowl); liquid is present but looks tinted, cloudy, or carries visible sediment rather than clear water; a tablet appears in only one beaker, or both beakers contain a tablet of the same size (both whole, or both half).
level_3: Two transparent beakers holding clear, colorless liquid stand next to each other; one tablet sits in the left beaker and one in the right beaker, but the two tablets look the same size and shape, giving no visual cue that one is a half-tablet and the other a whole tablet; or a tablet rests off-center or partly outside a beaker rather than settled in the liquid.
level_4: Two transparent beakers with colorless liquid stand side by side; the left beaker holds a visibly smaller broken tablet fragment resting on or within the liquid; the right beaker holds a larger tablet of the same color and shape, clearly about twice the size of the left fragment; both tablets stay where placed at the start, with no stray fragments or extra tablets in either beaker.
level_5: Two identical transparent cylindrical beakers with flat bases and straight walls are filled to matching liquid height and placed side by side on one level surface; the left beaker holds exactly one broken tablet fragment with a jagged edge and roughly half the visible area of the intact tablet; the right beaker holds exactly one whole tablet of matching color and material, symmetrical with clean edges; both tablets sit fully inside their beakers and roughly centered, with no glare or reflection hiding either tablet's shape.

Scientific and Causal Correctness rubric:
level_1: Neither beaker shows any color develop; or color appears at the same intensity and timing in both beakers; or color appears in the liquid before a tablet is dropped in; or dye color shows up in a beaker that has no tablet in it.
level_2: Color develops in both beakers but reaches the same intensity and appears on the same timing; or the left (half-tablet) beaker's color appears before the right (whole-tablet) beaker's; or the left beaker ends up more intensely colored than the right; or color spreads outward from a tablet but never settles into a visible gradient or halo shape.
level_3: Color appears in both beakers only after each tablet enters the liquid; the right (whole-tablet) beaker's color is visibly more intense than the left (half-tablet) beaker's; the color builds up gradually rather than appearing all at once; however the color fills each beaker evenly, with no visible halo or concentration gradient radiating outward from the tablet.
level_4: Color appears only once a tablet has touched the liquid in each beaker; the right beaker's color is clearly more intense than the left beaker's; color in both beakers builds up on a similar timescale with no long lag between the two; each beaker develops a halo of color around its tablet, with the right halo visibly larger and denser than the left; the color does not fade, reverse, or shift to a different hue.
level_5: Color begins right at each tablet's surface and expands outward as a halo in both beakers; at every point after onset, the right beaker's halo is both larger in extent and darker at its center than the left beaker's halo; both halos grow steadily in size and density through the whole sequence without pausing or shrinking; the two halos never merge, cross the beaker boundary, or blend into one uniform color within the roughly 10-second observation window.

Spatiotemporal Consistency rubric:
level_1: A beaker visibly jumps to a new position or vanishes between frames; a tablet appears or disappears with no placing motion; the liquid surface jumps or changes level with no visible cause; the lighting flashes or the shadow direction suddenly reverses; a beaker wall bends or warps; the camera angle suddenly cuts or spins.
level_2: One beaker flickers or briefly vanishes for more than an instant; a tablet appears to merge into the beaker wall or liquid surface with no visible depth separation; the liquid level rises or drops with no explanation (unexplained spilling or bubbling); a tablet rotates or slides with no surrounding liquid movement; background objects flicker or change shape.
level_3: Both beakers stay in the same place and orientation throughout; each tablet stays fully inside its beaker; the liquid surface stays still apart from small ripples caused by the dissolving tablet; the lighting stays even across the sequence; neither beaker nor tablet is clipped or layered incorrectly against the other; a brief blur or shake appears only during the moment each tablet is first placed.
level_4: Both beakers keep the same position, tilt, and size throughout; each tablet stays put on the beaker floor or surface after being placed; the liquid surface shows only smooth, gradual color spreading with no sudden changes; there is no visible tearing, doubling, or depth-order error between beaker, tablet, and liquid; shadows and reflections stay matched to a single unmoving light source.
level_5: Neither beaker visibly shifts position, tilts, or changes distance from the other at any point; neither tablet shows any visible drift, wobble, or jump; the liquid surface changes only through a smooth, steady color spread with no flicker or stutter; reflections on the beaker walls and liquid stay consistent with one fixed camera viewpoint; the clip shows no visible flicker, smearing, or stutter between frames.