Domain: Humanities and Social Sciences — Archaeology
Target concept: Stoneware masks from the Andean civilizations feature hollowed-out eye structures.

Video generation prompt: The demonstrator slowly rotates an Andean stone mask. The camera focuses on the shape of the mask's eyes, then switches to a side view, after which the image is refocused again.

Evaluation guide:
(i) Target concept: Visual verification of hollowed-out eye structures as a defining formal and functional trait of Andean stoneware masks.
Minimum mechanism: The mask must be a rigid, opaque, matte-finish stone object; rotation must be physically grounded (no levitation or suspension artifacts); optical focus shift must behave as a real-world lens adjustment (selective acuity on subject, not post-processing).
(ii)Storyline: [Start] Mask stationary in frontal view → [Action 1] Slow rotation begins → [Event 1] Camera locks onto eyes, resolving hollow apertures as distinct negative space → [Action 2] Camera moves laterally around mask → [Event 2] Side view establishes 3D profile and confirms eye cavity depth from lateral angle → [Action 3] Lens refocuses → [Event 3] Surface texture and rim definition sharpen exclusively on mask, confirming physical presence and material authenticity. Visibility constraints: Eyes must be unoccluded during frontal focus; side view must exclude frontal features (e.g., nose or mouth not visible); refocus must not alter composition or lighting, only local sharpness.

Manual:
Experimental Procedure
1. Place Andean stoneware mask on stable rotating platform.
2. Initiate slow, continuous rotation.
3. Frame initial shot tightly on mask’s eyes to resolve hollowed-out apertures.
4. Pan camera laterally while maintaining mask in frame to achieve strict side profile.
5. Refocus lens to sharpen mask surface details in side view.
Observation of Experimental Phenomena
- Hollowed-out eye structures are visibly apparent as unobstructed apertures during frontal focus.
- Side view reveals full lateral curvature and depth of the mask, including recessed eye cavity profile.
- Refocusing increases surface definition exclusively on mask features without affecting background.
Summary of Experimental Principles
Andean stoneware masks (e.g., Chavín, Tiwanaku) commonly feature intentionally hollowed-out eye sockets to create symbolic voids, enhance ritual gaze effects, and reduce weight — a diagnostic trait of pre-Columbian Andean lapidary tradition.

Prompt Grounding rubric:
level_1: No stone mask appears, or the object shown isn't mask-like (e.g., a flat picture or generic bust); or the camera never rotates around it; or there's no shot that frames in on the eye region; or there's no lateral/side shot; or the camera never performs a refocus: none of the four planned camera beats (rotation, eye-focused framing, side view, refocus) occurs.
level_2: A mask-like object appears but its surface reads as metal, ceramic glaze, or plastic rather than carved stone; rotation happens but the camera never frames in tightly on the eyes; a side/profile shot appears without an eye-focused shot beforehand; or a focus-pull is missing entirely, or happens at a moment unrelated to the viewpoint change.
level_3: A stone-textured Andean-style mask is shown; the camera rotates it slowly; at some point the shot frames in on the eye region; the camera then moves to a side/profile framing; then a focus-pull (refocus) occurs; the four beats happen in the prompt's order (eye framing, side view, refocus), but at least one of the three shots is compositionally weak (e.g., the eye region is only partly in frame, the 'side' shot is really three-quarter rather than a clean profile, or the refocus is barely noticeable).
level_4: All elements of score 3 present AND: the mask's surface consistently reads as matte stone with visible carving marks; the rotation runs continuously without stopping or reversing; the eye-focused shot is framed tightly enough that the eye region fills a clear portion of the frame with nothing blocking it; the side view is framed close enough to lateral that a profile is recognizable; the refocus shot visibly shifts sharpness onto the mask; the four beats occur in the correct order with none skipped or reordered, but one minor compositional flaw remains (e.g., a brief wobble in framing, the mask edge clipped by the frame for an instant, or a passing shift in ambient brightness unrelated to the refocus).
level_5: All elements of score 4 present AND: the mask's stone surface (matte, grainy, non-reflective) reads consistently across the whole shot; the rotation is smooth and steady from start to finish; the eye-focused shot centers the eye region squarely in frame with nothing in front of it; the side view is a clean profile framing (not a three-quarter angle); the refocus shot cleanly shifts sharpness onto the mask with the background staying out of focus; all four beats (rotation start, eye framing, side-view transition, refocus) occur in the exact order given in the prompt, with no shot skipped, reordered, or delayed.

Scientific and Causal Correctness rubric:
level_1: The mask's eyes are shown as solid, filled-in stone (no open aperture), contradicting the hollowed-eye trait being demonstrated; or the mask's iconography doesn't read as Andean at all (e.g., symmetrical cartoon eyes, painted-on features, or motifs from an unrelated tradition); or the mask appears to float or spin as if weightless, with no plausible support.
level_2: The mask reads as Andean in style but the eye cavities are only shallowly incised or partly filled rather than fully hollowed through; or the stone visibly bends, stretches, or otherwise deforms as it turns, which real carved stone cannot do; or the side view looks flat, giving no sense that the mask has any real depth or volume.
level_3: The eye-focused shot shows genuine hollowed-out apertures: open negative space where the eyes would be, consistent with the diagnostic Andean trait being demonstrated; the mask behaves as a single rigid block throughout (no bending, no melting); the side view shows some real depth (e.g., a visible rim thickness or a recessed eye socket), consistent with a carved stone object; but at least one of these reads ambiguously (e.g., the hollow apertures are hard to distinguish from shadow, or the side view's depth cue is faint).
level_4: The hollowed-out eye apertures are unambiguous in the eye-focused shot: clearly open space bounded by carved stone edges, not shadow or paint; the side view clearly shows the mask has real volume (e.g., a visible ear/temple ridge or the curve of the back of the head), consistent with a genuinely carved 3-D object rather than a flat cutout; the refocus shot sharpens real carved surface texture (tool marks, granular stone finish) rather than a smooth or synthetic-looking surface, but one minor ambiguity remains (e.g., a moment where lighting dims the apertures without erasing them).
level_5: The hollowed-out eye apertures are crisply and unambiguously resolved with full negative-space continuity: no fill, no occlusion, easily read as stone carved away rather than shadow or paint; the mask's overall form, proportions, and iconography are consistent with genuine Andean stoneware (e.g., Chavin- or Tiwanaku-style features) throughout every shot; the side view confirms the mask is a true 3-D carved object (visible back-of-head curvature or temple relief) rather than a flat prop; the refocus shot reveals authentic worked-stone texture (granular, tool-marked, non-glossy) with nothing about the material or iconography breaking the illusion of a genuine artifact.

Spatiotemporal Consistency rubric:
level_1: The mask snaps to a different position or orientation between shots with no visible transition; or it disappears from view for a moment and then shows up again; or its scale or rotation suddenly jumps to a new value; or the shot cuts from one brightness level straight to a very different one with no fade or pan bridging it; or part of the mask (e.g., the eye rim) appears to break apart or detach.
level_2: The rotation shows visible stutter or skipped frames rather than a smooth turn; the shot jumps straight from the eye-focused framing to the side view with a hard cut instead of a camera move; the refocus looks like a digital sharpening effect (haloed edges, amplified grain) rather than an optical lens focus-pull; or the shadow the mask casts swings to a new direction that doesn't match any change in rotation or light position.
level_3: The rotation runs continuously but speeds up or slows down slightly in a way that doesn't match a steady 'slow rotation'; the move from the eye-focused shot to the side view arcs smoothly with no snap-cut, but for a moment the angle looks in-between (neither a clean frontal nor a clean profile view); the refocus shifts sharpness smoothly with no jump, but briefly some sharpness also appears outside the mask (e.g., in foreground dust or the background).
level_4: The rotation holds a steady, unhurried pace with no speeding up or slowing down; the path from the eye-focused shot to the side view is one continuous arc with no in-between hybrid angle; the refocus sharpens only the mask's surface, never spilling onto the background; the direction and softness of the mask's cast shadow tracks its turning angle the same way throughout, rather than jumping to a new direction independent of the rotation, apart from one small, easily missed slip somewhere in the sequence (e.g., a brief, faint shimmer right as the lens refocuses).
level_5: Zero teleportation, zero discontinuity: the mask's position, orientation, and scale evolve continuously and monotonically; the eye-focused shot holds a steady frame on the eye apertures for its whole duration; the transition to the side view traces one unbroken rotational arc with no hesitation, overshoot, or snapping back; the refocus is a clean, localized, and immediate jump in sharpness confined to the mask itself; and the lighting, the shadow the mask casts, and its reflections stay locked to its rotation angle and viewpoint the whole time, never drifting independently of the turn.