Q: "A woman reading a children's book." Does this mean that "SHe is reading to children"?
A: it is not possible to tell

Q: "A band consisting of a guitar payer, banjo player, and accordion player, performs as a group of middle-aged people dance on the dance floor." Does this mean that "A band performs."?
A: yes

Q: "a Guy in black is riding white motorcycle." Does this mean that "There are two people on the motorcycle."?
A: no

Q: "Two Asian girls walk along the park." Does this mean that "Two girls go for a swim at the park."?
A:
no