Q: "A man fishes under a large tree." Does this mean that "The man is fishing from inside a boat."?
A: no

Q: "A young man sits on the floor in a room full of bags, suitcases and packages." Does this mean that "A young man is sitting on a suitcase."?
A: it is not possible to tell

Q: "A blue-robed and hooded figure is walking past occupied tables in an upper-class room." Does this mean that "A mysterious person in class."?
A: yes

Q: "a snowboarder wearing green pants doing a trick on a high bench" Does this mean that "person at the x games"?
A:
it is not possible to tell