Q: "A man is standing on a stage holding a flag." Does this mean that "There is one man in the picture."?
A: yes

Q: "Two young fair girls are smiling a posing together while they ride in a boat wearing floatation vests." Does this mean that "The two girls were posing for the camers while they were on a ride"?
A: yes

Q: "People standing around a city square with bikes." Does this mean that "The bikes belong to those gathered."?
A: it is not possible to tell

Q: "A young girl carries a toddler on her back." Does this mean that "The young girl was helping the toddler get around"?
A:
it is not possible to tell