Q: "A woman in an orange shirt and a man in a brown patterned sweater wave at someone in the distance." Does this mean that "Some people are acknowledging another person up ahead."?
A: it is not possible to tell

Q: "A group of children playing in a water fountain." Does this mean that "The children are all boys."?
A: it is not possible to tell

Q: "a man wearing a coat and rain hat pushes a blue shopping cart loaded with his belongings across a street." Does this mean that "A man in a raincoat moves some objects around."?
A: yes

Q: "A man gliding in the sky with the sunset on the horizon in the background." Does this mean that "A man is gliding during sunset."?
A:
it is not possible to tell