Domain: Humanities and Social Sciences — Archaeology
Target concept: Athens Owl Tetradrachm

Video generation prompt: A camera orbits around the display case, recording an ancient coin: a silver tetradrachm of the Owl of Athens.

Evaluation guide:
(i) Target concept: Archaeological authenticity of the Athenian owl tetradrachm as a standardized silver coin with invariant iconographic grammar.
Minimum mechanism: The coin must be physically rigid, non-transforming, and optically consistent with solid metal under fixed illumination; the orbital camera must preserve spatial coherence of case-and-coin system without violating Euclidean perspective or material continuity.
(ii)Storyline: [Start] Neutral pedestal with transparent case centered in frame → [Action onset] Camera begins slow, steady lateral displacement around case perimeter → [Mid-orbit] Viewpoint passes right side: Athena obverse dominates frame, then recedes as owl reverse emerges → [Apex] Back view shows full coin profile and case rear structure → [Late-orbit] Left side reveals reverse dominance, then obverse re-enters frame → [End] Front view restored with identical composition to start; throughout, coin remains motionless inside case, case geometry unchanged, lighting direction invariant, and surface properties (reflectivity, relief, color) stable.

Manual:
Experimental Procedure
1. Place a transparent display case containing one authentic silver Athenian owl tetradrachm on a neutral pedestal.
2. Position camera at waist height, begin smooth orbital motion around case at constant distance.
3. Complete full circuit, ensuring coin remains centered in frame throughout.
Observation of Experimental Phenomena
- Silver coin with a helmeted profile of Athena on the obverse, and a frontal owl facing the viewer, olive sprig to its right, and crescent below it, on the reverse, remains rigidly fixed inside case.
- Camera viewpoint transitions continuously: front → right → back → left → front, revealing coin obverse (Athena) then reverse (owl) at distinct angles.
- Coin surface exhibits raised relief, cool-gray metallic luster, and no corrosion or deformation.
Summary of Experimental Principles
The Athenian owl tetradrachm (5th c. BCE) was the dominant silver currency of Classical Greece, featuring Athena Parthenos on obverse and her sacred owl on reverse—symbolizing wisdom and civic authority. Its standardized weight (17.2g), high silver purity, and consistent iconography enabled pan-Hellenic trust and archaeological identification.

Prompt Grounding rubric:
level_1: No display case is shown, no coin is visible, or the camera never moves around any object: the scene doesn't depict a coin display or an orbiting camera at all.
level_2: A display case is shown but it is empty or holds something other than a coin (e.g., a modern coin, a plain disc, or a non-numismatic object); or the camera stays static, only pans, or only zooms rather than moving around the case.
level_3: A display case holds exactly one ancient-looking coin with engraved designs on both faces; the camera moves around the case, and at some point both a helmeted-figure side and a bird-and-branch side of the coin become visible, but the camera's path covers well under half of a full circuit, or the coin is angled so that one whole face stays permanently hidden.
level_4: A display case holds exactly one silver-toned ancient coin; the camera's path continuously circles the case, and the orbit is extensive enough that both engraved faces of the coin (the helmeted-figure side and the owl-and-branch side) become visible at different points, purely from the camera moving rather than the coin itself turning; no extraneous objects, on-screen text, or UI overlays appear in frame, except for one small imperfection, such as a brief instant where glare or an odd angle makes one face harder to read.
level_5: A display case holds exactly one silver-toned coin, identifiable as a two-sided ancient coin bearing a helmeted profile on one face and a bird with a branch on the other; the camera executes a smooth, essentially uninterrupted circuit fully around the case, so both faces of the coin are clearly revealed at distinct points in the orbit purely through camera movement (the coin itself never rotates independently); no extraneous objects, text, or interface elements ever appear in frame, and the lighting throughout keeps the coin's engraved surface visible without being washed out by glare.

Scientific and Causal Correctness rubric:
level_1: The reverse of the coin shows a bird in side profile facing left or right instead of facing the viewer frontally, or shows no owl-like bird at all; no olive-branch or crescent shape appears near it; the coin's overall tone reads as gold, bronze, or flat uniform gray rather than silver; or lettering, dates, or markings appear that would not belong on an ancient coin.
level_2: The coin's reverse shows a frontal owl-like bird, but the olive-branch shape or the crescent shape beside it is missing; or the coin's obverse profile figure (Athena) is present but shows no visible helmet crest at all; the coin surface appears to be melting, dripping, or losing its solid form; or the coin's color reads as yellow, brown, or green instead of silver-toned.
level_3: The coin's reverse shows a frontal owl alongside an olive branch and a crescent shape, and the obverse shows a helmeted profile figure, but the helmet's crest is faint or incomplete, the coin's silver-toned surface looks completely flat with no raised relief, or the orbit shows the owl rotated onto its side rather than upright and facing forward.
level_4: The coin clearly shows, at different points in the orbit: a reverse face with a frontal owl (facing the viewer, not in profile), an olive branch to its right, and a crescent below it; an obverse face with a profile figure (Athena) wearing a helmet with a visible crest and visor; a consistent silver tone with visibly raised relief rather than a flat engraving; and the coin stays rigid and solid throughout, with no melting, deforming, or turning transparent.
level_5: The reverse owl is rendered frontally, facing the viewer rather than shown in side profile, next to a three-leaved olive branch to its right and a crescent curving upward beneath its feet; the obverse profile figure's helmet shows a clearly raised crest, visor, and cheekpieces; the silver surface shows subtle brighter and darker patches consistent with light catching its raised relief rather than a uniformly flat sheen; and no tarnishing, wear, or corrosion visibly develops on the coin over the course of the video, consistent with a preserved museum piece.

Spatiotemporal Consistency rubric:
level_1: The camera's viewpoint jumps abruptly between very different angles with no smooth motion in between, as if frames were cut together rather than filmed as one continuous orbit; the display case flickers, disappears, or visibly changes size or shape partway through the orbit; or the coin itself appears to vanish, reappear, or spin on its own independent of the case's position.
level_2: The camera's path around the case covers only a small arc (well under half a full circuit) rather than progressing further around; the camera visibly pauses or freezes for a stretch before continuing; the case or coin appears to stretch, shrink, or distort its proportions as the viewpoint moves; or the direction of the coin's shadow or highlight shifts suddenly from one side to the other with no gradual transition.
level_3: The camera's orbit is continuous and covers roughly three-quarters or more of a full circuit around the case; the case stays in the same place and at the same size throughout; the coin remains centered inside the case; the coin's highlights and cast shadow shift gradually as the viewpoint moves rather than jumping, but the camera motion has a couple of brief, noticeable jerks or slowdowns, or the case's edges look slightly bent or warped in a few frames.
level_4: The camera's orbit is smooth and covers what reads as a full circuit around the case; the case keeps its rigid rectangular shape and fixed position throughout; the coin stays motionless inside the case; the coin's shadow and highlights shift smoothly and stay geometrically plausible relative to the case as the viewpoint changes; the only motion artifact present is a soft blur during faster parts of the camera movement, consistent with normal camera motion at that speed.
level_5: The camera's orbit is smooth from start to finish with no visible jerks, slowdowns, or blur inconsistencies; the display case's edges and corners stay straight and rectangular from every viewing angle; any reflection visible on the case's glass surface shifts in a way that matches the changing camera angle rather than staying static or moving independently; the coin's cast shadow keeps a consistent shape and position relative to the coin itself throughout; and the case's edges show no visible bending or distortion even at the frame's outer edges.