Domain: Engineering — Electrical Engineering
Target concept: When a person enters the room, the PIR human body infrared motion sensor turns on a light.

Video generation prompt: A desk lamp is connected to a PIR motion sensor located at the door. A person opens the door, enters, pauses for a moment, stands still, and then leaves.

Evaluation guide:
(i) Target concept: Motion-triggered electrical actuation via passive infrared sensing.
Minimum mechanism: PIR sensor must be positioned to observe the doorway plane; lamp circuit must be wired to sensor output (not manual switch); lamp state change must be temporally bound to human motion crossing detection zone, not ambient light, sound, or time delay alone.
(ii)Storyline: [Frame 0] Door closed, lamp OFF, room dark/dim. → [Door opens] Person’s hand appears, door swings inward. → [Threshold crossing] Person’s torso crosses vertical plane of doorway; lamp turns ON. → [Entry complete] Person steps fully inside, stops moving; lamp remains ON. → [Exit initiation] Person turns, walks toward door; lamp stays ON. → [Threshold re-crossing] Person’s torso crosses doorway plane outward; lamp remains ON. → [Exit complete] Person’s last limb clears doorway, stillness resumes; lamp turns OFF within same continuous shot. Perspective: Fixed frontal-medium shot, centered on doorway and desk; full-body visibility maintained at all times; no cuts or zooms.

Manual:
Experimental Procedure
1. Mount PIR sensor on door frame at typical height (≈1.2 m). Connect sensor output to desk lamp power circuit.
2. Person opens door, fully enters room, stands motionless for observable pause, then fully exits.
Observation of Experimental Phenomena
Desk lamp is OFF before entry → turns ON during/just after person crosses doorway → stays ON while person stands still → turns OFF only after person fully exits and motion ceases.
Summary of Experimental Principles
PIR sensors detect infrared radiation changes caused by moving warm bodies. When a person enters the detection zone, sensor output activates lamp circuit. Lamp remains on only while motion is detected; after stillness or exit, timer expires and lamp deactivates.

Prompt Grounding rubric:
level_1: No desk lamp, no sensor near the door, no person, no door, or no full enter-pause-exit sequence appears; the scene doesn't read as a motion-activated-lamp setup at all.
level_2: A lamp, a sensor near the door, and a person each appear at some point, but not together in one continuous scene; or the person's actions are out of order: for example, the person is shown leaving before ever entering, or the door is never shown opening.
level_3: The desk lamp, a sensor mounted at the door frame, the person, and the door all appear together in one continuous scene; the door opens, the person walks in, pauses while standing still, and then walks back out; but the sensor is barely visible or mounted somewhere clearly wrong, such as far from the doorway, so its role in the scene is unclear.
level_4: Everything described for level 3 is present, and in addition: the sensor is clearly mounted right at the door frame rather than on the ceiling or a distant wall, the lamp sits visibly on the desk, and the whole open-enter-pause-exit sequence plays out without cuts or the person leaving the frame.
level_5: Everything described for level 4 is present, and further: the sensor is recognizable as a distinct small unit with a visible lens or grille rather than an ambiguous shape, the person stands during the pause without large postural shifts or stepping, and the door's swing looks physically ordinary (one fixed hinge side, a consistent arc) for the whole sequence.

Scientific and Causal Correctness rubric:
level_1: The lamp turns on with no person in the room, stays on after the person has fully left and the room is empty, or turns on before the door has even opened.
level_2: The lamp changes state, but the cause and effect are backward or scrambled: it turns on before the person's body reaches the doorway, or it turns off while the person is still inside and standing still, or it switches on and off more than once during a single visit without any matching movement.
level_3: The lamp turns on only well after the person has already walked in and settled (not right as they cross the doorway) and turns off only after the person has fully left, but it stays on too long into the exit walk or switches off slightly before the person is fully clear of the doorway.
level_4: The lamp turns on right as the person's body crosses the doorway plane into the room, stays on the whole time the person stands still inside, and turns off only after the person has completely left and stopped moving for a brief, clearly visible pause, with no missed or extra on/off switches.
level_5: Everything described for level 4 is present, and further: the lamp does not turn on while the door alone is being pushed open before the person's body reaches the doorway; it holds a steady brightness the entire time the person stands still, without dimming or flickering; it switches off only once, right after the person's body has fully cleared the doorway and stopped moving; and no other change in room lighting, such as a shift in daylight, lines up with the lamp's on/off moments in a way that could explain them instead of the sensor.

Spatiotemporal Consistency rubric:
level_1: The person or the lamp appears or disappears with no transition (e.g., the person is suddenly gone mid-stride, or the lamp switches state instantly with no fade), the door detaches from its hinge or the wall visibly tears, or the room's overall lighting jumps abruptly with no fade in between.
level_2: A smaller but still clear break happens instead: the sensor appears mounted on the wrong surface (floor, ceiling, or far from the door) or looks unattached and floating; the lamp's position on the desk shifts between shots; the person appears to walk through the closed door; or the door swings with no fixed hinge point.
level_3: The sensor stays mounted at the door frame, the lamp stays in its place on the desk, and the person's path stays on the floor without floating or sliding sideways; the room's lighting changes smoothly rather than in a sudden jump; but one small flaw is present, such as the lamp's shadow shifting once unexpectedly, the person's feet briefly appearing to sink into the floor, or the door's edge disappearing oddly as it swings near the frame's border.
level_4: Everything described for level 3 is present, with no disappearing or reappearing objects, no detached parts, no abrupt lighting jump, and no visible overlap between the person and the door or desk that looks wrong; the person's walking path stays continuous and grounded the whole time; when the person passes close to the door frame, the door frame is properly hidden behind them rather than showing through; the lamp's glow lights the desk surface beneath it consistently in every frame where it is on.
level_5: Everything described for level 4 is present, and further: the person's walking speed eases in and out smoothly at the start and end of each stride rather than starting and stopping abruptly; the lamp's light looks brightest right under the lamp and softer toward the edges of the desk, rather than a flat, uniform patch; the sensor's size and angle relative to the door frame stay the same throughout with no odd shift in perspective; and the door frame stays properly hidden behind the person all the way through the exit, until they are completely through the doorway.