Q: "A young boy casting his fishing line off a pier" Does this mean that "A young boy is fishing."?
A: yes

Q: "Several children are playing on a "Moon Bounce," with one child in the foreground and a supervisory adult in the background." Does this mean that "Children bounce on an inflatable "Moon Bounce.""?
A: yes

Q: "A man rowing in the front of a canoe in a large body of water." Does this mean that "He is swimming in a large body of water."?
A: no

Q: "An airport crowded with people." Does this mean that "The airport is packed."?
A:
yes