Q: "A man wearing a green shirt and a dark colored vest is sitting at a table with a glass of water in front of him." Does this mean that "The man is thirsty."?
A: it is not possible to tell

Q: "Athletic man lifting steel free-weights at a gym." Does this mean that "A woman is running on a treadmill."?
A: no

Q: "Two men and two women are preparing a large meal in the kitchen." Does this mean that "two guys and a pair of ladies are in the kithchen readying a meal"?
A: yes

Q: "A man wearing a green jacket is talking on the phone while holding a baby wearing a pink jacket." Does this mean that "The jacket is blue."?
A:
no