Q: "A man in blue jeans is picking something out of a blue bucket on the walkway." Does this mean that "A person found a dollar in a bucket outside."?
A: it is not possible to tell

Q: "a man dressed in a frontier uniform is holding a rifle." Does this mean that "The man is barehanded"?
A: no

Q: "A boy in a red coat is playing with a train set." Does this mean that "A boy plays with a train set."?
A: yes

Q: "A man in a white and blue uniform and a blue and white helmet riding a black and yellow bike." Does this mean that "The odd-looking little old man wore a blue and while jumpsuit with a matching helmet as he rode the little bicycle around in circles."?
A:
it is not possible to tell