Q: "Group of teen males picking up garbage." Does this mean that "Some humans picking up trash."?
A: yes

Q: "The person on the bicycle is wearing red." Does this mean that "The bicyclist is a woman."?
A: it is not possible to tell

Q: "Seated black man in business suit gestures with hands while white man listens." Does this mean that "Conversation is going on between black and white man."?
A: yes

Q: "A man in a colorful outfit with cherries imprinted on the sleeve, pulling a cart with bags." Does this mean that "The man with the cart is wearing a shirt with a cherry design."?
A:
yes