Q: "A girl leans on a kitchen counter laughing, with the waistband of her pants at crotch level." Does this mean that "The girl is wearing pants."?
A: yes

Q: "A boy wearing a flowered shirt raises his arm and jumps." Does this mean that "A boy is jumping with his arms raised."?
A: yes

Q: "The skateboarder does a trick on the railing while other people passing by watch." Does this mean that "The skateboarder is riding a skateboard."?
A: yes

Q: "Three men in black and red uniforms are playing lacrosse." Does this mean that "3 men are playing lacrosse"?
A:
yes