Domain: Healthcare — Pharmacy
Target concept: Difference in dissolution rate between orally disintegrating tablets and conventional tablets

Video generation prompt: Two identical transparent containers, each containing a small amount of still water, are placed side by side. An orally disintegrating tablet is placed in the left container, and a conventional tablet of the same size and volume is placed in the right container. The disintegration and release behavior are observed.

Evaluation guide:
(i) Target concept: Differential disintegration kinetics driven by tablet microstructure and excipient composition.
Minimum mechanism: Water must penetrate tablet matrix via capillary action; disintegration requires sufficient porosity and hydrophilic excipients to generate swelling or pore pressure; conventional tablets must resist such penetration due to low porosity and hydrophobic binders, all reflected in observable surface stability vs. instability.
(ii)Storyline: Frame 0–2: Static shot showing two identical transparent containers side-by-side, each with still water surface visible. Frame 3–4: Hands (or mechanical tool) enter symmetrically from top, holding two distinct tablets: left tablet matte/pored, right tablet smooth/glossy. Frame 5–6: Both tablets descend vertically and land centered in water without tilt or slide. Frame 7–10: Left tablet shows progressive surface disruption (no intact edges remain), right tablet retains original geometry and surface continuity; no bubbles, color change, or effervescence; water remains optically clear in both; viewpoint remains fixed, lighting constant, no occlusion.

Manual:
Experimental Procedure
1. Place two identical transparent containers side-by-side.
2. Fill each with a small amount of still water.
3. Simultaneously place an orally disintegrating tablet in the left container and a conventional tablet of same size/volume in the right container.
Observation of Experimental Phenomena
The orally disintegrating tablet rapidly loses structural integrity (surface erosion, edge fraying, particle shedding), while the conventional tablet remains fully intact with sharp edges and uniform surface throughout.
Summary of Experimental Principles
Orally disintegrating tablets contain superdisintegrants and highly porous matrices enabling rapid water uptake and capillary action, leading to fast disintegration; conventional tablets use hydrophobic binders and denser compression, resisting water penetration and delaying disintegration.

Prompt Grounding rubric:
level_1: No side-by-side pair of transparent containers appears; no tablet is placed in either container; the objects shown aren't tablets at all (e.g., capsules, loose powder, or other solids); the two containers don't match each other in shape and size; neither container shows still water inside.
level_2: Two matching transparent containers sit side by side, but at least one has no visible water in it; or only one of the two tablets (left or right) is ever placed; or the left and right tablets look identical in color and surface finish with nothing to tell them apart; or a tablet is dropped in from outside the frame so its landing position can't be confirmed.
level_3: Two matching transparent containers, each holding a small amount of still water, sit side by side in a fixed shot; an orally disintegrating tablet is placed in the left container and a conventional tablet of the same size and volume is placed in the right container; both tablets are visible as distinct solid objects; the placement of each is fully shown (one after the other, or both at once); the scene matches the prompt's description of objects, quantities, and left/right arrangement.
level_4: All of score 3, AND the two tablets show some visually apparent difference (for example, a matte or porous-looking surface on the left tablet versus a smooth, glossy one on the right, or a visible marking/embossing difference) rather than looking like duplicate objects; both containers and both tablets stay fully in frame for the whole video; nothing else enters or leaves the shot; neither container is blocked from view during placement.
level_5: All of score 4, AND both tablets are placed with matching motion (same hand path, same drop speed, same orientation at contact), landing centered in their own container without tipping or sliding sideways; no glare, motion blur, or lens distortion hides either tablet or container at any point; the camera holds one static framing with no pan, tilt, or zoom.

Scientific and Causal Correctness rubric:
level_1: Neither tablet shows any disintegration or dissolution: both stay fully intact and look identical the whole time; or both tablets break down at the same visible rate; or the water changes color, bubbles, or fizzes in a way that has nothing to do with how tablet excipients actually dissolve.
level_2: At least one tablet visibly starts breaking down (surface erosion, cracking, or crumbling), but the left and right tablets follow the same timing and pattern of breakdown with no visible difference between them; or one tablet disappears entirely while the other stays perfectly solid with no gradual process shown in between; or both appear to dissolve instantly.
level_3: The left (orally disintegrating) tablet visibly starts breaking down (its surface softens, edges fray, or particles shed off) while the right (conventional) tablet keeps its sharp edges and even surface intact; this difference in onset or extent is clearly visible before the video ends; the water stays clear with no unrelated bubbling, cloudiness, or color change.
level_4: All of score 3, AND the left tablet progresses further (individual particles visibly separate and drift or suspend in the water) while the right tablet still shows no surface change at all (no haze forming around it, no edge softening, no fine particles settling); the left tablet's breakdown is visibly underway before the right tablet shows any change at all.
level_5: All of score 4, AND the left tablet finishes disintegrating (no cohesive lump remains larger than a small fragment of the original tablet) while the right tablet ends the video with no visible surface change whatsoever (no pitting, no rounded edges, no loose particles); at no point do the two tablets look equally broken-down; the visible chain is unambiguous: the left tablet's porous, hydrophilic matrix lets water in and falls apart quickly, while the right tablet's denser, more water-resistant surface holds together.

Spatiotemporal Consistency rubric:
level_1: One or both containers jump to a different spot between frames; a tablet appears already inside the water with no visible drop; the room lighting suddenly changes the water's apparent transparency; the water surface goes from still to violently splashing and back to still within two consecutive frames with no visible cause; a container's wall or base visibly breaks apart; a tablet spins more than a quarter turn with nothing to explain it.
level_2: One container shifts slightly sideways or up/down between frames; the tablet-drop motion shows a visible jump cut or a repeated frame; the water surface flips from concave to convex with no cause; the shadows cast by the containers change direction or strength inconsistently from frame to frame; a tablet that has already sunk appears to float back up.
level_3: Both containers stay in the same place relative to each other the whole time, with no jumps, no broken container walls, and no impossible motion (tablets sink normally, no floating or spontaneous spinning); the water stays still apart from the small, natural ripple each tablet makes on impact; the light source and the shadows it casts keep the same direction and softness throughout; all motion (drop, sink, settle) reads as smooth and physically ordinary.
level_4: All of score 3, AND there's no flicker or strobing between frames; neither container's edges nor either tablet's outline show compression-style distortion; both containers stay in equally sharp focus the whole time (no sudden blur shift); each tablet visibly slows down as it meets the water surface rather than stopping abruptly or bouncing; the water's meniscus around each container stays steady and undistorted.
level_5: All of score 4, AND no motion blur hides either tablet's surface texture or either container's transparency; the two containers show no camera-parallax shift relative to each other (confirming a static camera); there's no dropped or duplicated frame anywhere; the water surface catches ambient light consistently across the whole sequence; each tablet's impact produces a small, brief ripple of similar scale in its own container, matching the same drop height and water depth on both sides.