Q: "A working man is standing by the cart looking at something." Does this mean that "a man looks for something"?
A: yes

Q: "A crowd of people looking at something." Does this mean that "Crowd of people looking at something"?
A: yes

Q: "The little boy with red-hair jumps on the trampoline." Does this mean that "the boy is happy"?
A: it is not possible to tell

Q: "A female child walks down a sidewalk while a male child watches." Does this mean that "A boy in a blue shirt watches a girl in a green dress walk down a brick sidwalk."?
A:
it is not possible to tell