Q: "A man is hauling something out of the water into a small boat." Does this mean that "A woman fishes on the dock."?
A: no

Q: "a man in green carries his bike in front of a stone building and sign hanging on a fence saying "Rouleur, www.rouleur.cc"" Does this mean that "A man is taking his bike to a bike repair place."?
A: it is not possible to tell

Q: "Girls participate in roller derby." Does this mean that "There are some girls in this picture"?
A: yes

Q: "A pretty man and woman performing ballet." Does this mean that "A man and woman are sitting in chairs."?
A:
no