Q: "Three little girls are sitting at a red table with an empty green table in the background." Does this mean that "There are three girls"?
A: yes

Q: "A young boy on rollerskates jumps over a blue barrel." Does this mean that "The boy is talented."?
A: it is not possible to tell

Q: "The man rides his bicycle up the brick wall." Does this mean that "The man can't ride a bike."?
A: no

Q: "A dog stands on the grass while tied up." Does this mean that "A dog is tied to a post by his leash in someone's yard."?
A:
it is not possible to tell