Domain: Humanities and Social Sciences — Archaeology
Target concept: Sasanian Persian Silver Coins

Video generation prompt: A camera orbits around the display case, showcasing ancient coins: Sasanid Persian silver coins.

Evaluation guide:
(i) Target concept: Visual demonstration of Sasanian Persian silver coin typology via controlled orbital cinematography.
Minimum mechanism: Coins must be statically mounted in a fixed display case; camera must move relative to case (not vice versa); silver appearance requires absence of gold plating, corrosion, or pigment alteration; fire altar and crowned-ruler motifs must be recognizably Sasanian in style (not generic ancient-coin decoration or another culture's iconography), though identifying the exact named ruler is not required at orbital viewing distance.
(ii)Storyline: [Start] Static wide shot showing display case centered with coins visible. → [Action onset] Camera begins smooth lateral movement initiating orbital path. → [Mid-orbit] Case remains stationary; coins maintain fixed orientation; obverse/reverse motifs become sequentially legible from different angles. → [Apex visibility] At ~90° and ~270° viewpoints, fire altar flames and crown details are fully resolved without occlusion. → [Completion] Camera returns to start viewpoint with seamless continuity; all coins identically rendered as at start: no positional, rotational, or material change.

Manual:
Experimental Procedure
1. Position a transparent display case containing 3–5 authentic Sasanian Persian silver coins on a neutral pedestal.
2. Initiate a smooth, continuous camera orbit around the case at eye level, completing one full revolution.
3. Maintain fixed focal length and exposure throughout.
Observation of Experimental Phenomena
- Coins remain fully visible and rigidly fixed inside the case at all viewpoints.
- Obverse side consistently shows crowned Sassanian ruler; reverse shows fire altar with flames and attendants.
- All coins exhibit uniform matte silvery-white color and flat circular geometry.
Summary of Experimental Principles
Sasanian Persian silver coins (3rd–7th c. CE) were standardized drachms minted in high-purity silver, featuring royal portraiture on obverse and Zoroastrian fire altar on reverse—key archaeological evidence for imperial ideology, metallurgy, and religious practice.

Prompt Grounding rubric:
level_1: No display case is shown; no coin-like objects appear inside it; the camera never orbits or moves around anything: the scene contains no case, no coins, and no orbital camera motion at all.
level_2: A display case or case-like container appears, but coins are missing, or only one ambiguous coin-shaped object appears with no discernible obverse/reverse faces; the camera stays static, or only pans or zooms rather than orbiting the case.
level_3: A display case holding multiple round, coin-like objects is shown, and the camera moves along a path that circles around the case, revealing different sides of it over the shot; however, the coins are not clearly held in a fixed mount (e.g., they appear to float, overlap, or shift independently of the case), or the camera's path does not complete a meaningful arc around the case.
level_4: A display case holding several coin-shaped objects is shown; the camera performs a continuous orbit around the case (not a single static angle, pan, or zoom); the coins stay fixed in place relative to the case and keep facing the same direction as the case turns past the camera; no unrelated props, hands, or text overlays are visible inside or around the case.
level_5: Everything required at the 4-point level holds, and additionally: at least three separate coin-shaped objects are visible and distinguishable from one another inside the case; the camera traces a full, uninterrupted loop around the case at a steady height and distance without stopping partway or cutting to a new angle; every coin stays fully inside the frame at a legible size throughout the loop, with no coin sliding out of view, overlapping another coin, or changing apparent size abruptly.

Scientific and Causal Correctness rubric:
level_1: The coins shown do not read as Sasanian at all: for example they carry Latin or Greek lettering, a Roman-style portrait bust, Arabic script, or a modern coin design instead of a crowned Persian ruler and a fire altar; or the coins look golden, coppery, or corroded green/black rather than silver.
level_2: At least one coin shows a crowned figure and a stand-like shape, but neither reads as clearly Sasanian: the crown has no distinctive tall or knobbed silhouette, the altar shape shows no flame or attendants, or the coin surface looks shiny yellow or textured like bronze rather than matte silver; coins may also appear molten, bent, or unnaturally translucent.
level_3: Every visible coin shows a crowned ruler on one face and a fire altar on the other, in roughly correct proportion and layout; the metal reads as a neutral silver tone rather than warm gold or greenish patina; however, at least one coin is missing a visible flame above the altar, or shows a script or decoration style that doesn't match Sasanian conventions (e.g., a clearly different alphabet or unrelated symbols crowded around the rim).
level_4: All visible coins show a crowned Sasanian-style ruler on the obverse and a fire altar with a visible flame and two flanking attendant figures on the reverse; the crown reads as a distinct royal headdress (tall, banded, or winged in outline) rather than a plain circle or generic hat; every coin has a consistent matte silver tone with no coin showing tarnish, gold plating, or corrosion that would be inconsistent with a well-preserved silver piece.
level_5: Everything required at the 4-point level holds at every viewing angle the orbit provides, and additionally: the fire altar's flame and attendant figures stay recognizable (not reduced to an unreadable blur) as the camera passes the coin's best-visibility angle; the crowned ruler's headdress is rendered with enough distinct detail (e.g., a clear crown band, knob-like finial, or wing shape) that it reads as a specific known Sasanian crown style, even though the exact king does not need to be nameable at this viewing distance; no coin in the set could be mistaken for Kushan, Roman, or Islamic-era coinage.

Spatiotemporal Consistency rubric:
level_1: The display case's position or size jumps abruptly from one moment to the next instead of moving smoothly with the orbit; one or more coins vanish from the case and reappear a moment later with nothing shown blocking them; the room lighting swings from bright to near-black within a single cut; or the shot appears to jump between two clearly different viewing angles (e.g., overhead one moment, eye-level the next) within what should be one continuous orbit.
level_2: The display case changes apparent size or shifts position mid-orbit in a way that doesn't match how far the camera has moved (no consistent parallax); individual coins rotate or tilt on their own instead of only appearing to turn because the camera is circling them; a coin's shadow swings to a new direction or disappears momentarily with no change in the scene's light source; background elements behind the case bend or stretch unnaturally as the camera passes them.
level_3: The orbit reads as continuous overall, but has small rough edges: one coin's edge briefly overlaps another's in a way that looks like they're at the same depth rather than clearly one behind the other; a coin's shadow momentarily looks slightly off from the rest; the case's edges look faintly warped at the widest viewing angles but the case never loses its overall rectangular/box shape.
level_4: Everything required at the 3-point level holds, and additionally: the camera's orbit is smooth from start to finish with no visible jump, freeze, or sudden speed change; the case stays the same size and position throughout: only the viewing angle changes; every coin stays fixed in its mount without sliding, tilting, or spinning independently of the case; each coin's shadow points the same way as every other coin's shadow at a given moment and shifts gradually as the camera passes, rather than snapping to a new direction.
level_5: Everything required at the 4-point level holds, and additionally: the camera's path traces a single smooth loop around one consistent center point rather than wobbling or drifting off a circular track; the case shows no flexing or breathing in its outline as the camera passes it; each coin's shadow evolves gradually and predictably as the viewing angle changes, never snapping to a new position; near and far elements (case, coins, background) keep a believable size and focus relationship throughout the orbit, with no visible stutter or ghosting that would make a coin's edge hard to make out.