Q: "A person sits on a red bench to eat while another watches." Does this mean that "two people sitting and taking"?
A: it is not possible to tell

Q: "A group of four young men and one young woman holding spray paint cans and smiling next to their artwork." Does this mean that "The people were playing ball."?
A: no

Q: "a man is wakeboarding in a lake" Does this mean that "the man is at the lake"?
A: yes

Q: "A girl with a backpack runs down the street." Does this mean that "The girl is outside."?
A:
yes