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A hand crumples a plastic bag with a soft dull crinkle. Then crumples aluminum foil with a sharper metallic crackle.

C2-1-33 Event Transition · source_body principle: Material Comparison (Material)
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Per-prompt rubric

Basic standards

Visual presence

  • a hand
  • a plastic bag
  • aluminum foil

Event: a hand crumples a sheet material

Audio presence

  • a plastic bag
  • aluminum foil

Sound: crumpling

Key standards

Visual physical commonsense (V-PC)

  • Both a plastic bag and aluminum foil are separately visible and crumpled by hand at distinct points in the clip.

Audio physical commonsense (A-PC)

  • The plastic-bag crumple has a soft dull crinkle and the aluminum-foil crumple has a distinctly sharper, metallic crackle.

Cross-modal physical commonsense (AV-PC)

  • Each crumpling sound coincides in time with visible deformation of its corresponding material.
  • The soft dull crinkle corresponds to the plastic bag being crumpled.
  • The sharper metallic crackle corresponds to the aluminum foil being crumpled.