Q: "Lady in black jacket, talking to man in black jacket." Does this mean that "Two people are conversing to each other."?
A: yes

Q: "An agile dog catches a Frisbee while a crowd of onlookers watches closely." Does this mean that "A cat purrs."?
A: no

Q: "A man in a black shirt is talking to a man squatting down wearing a white shirt." Does this mean that "two men are talking"?
A: yes

Q: "A man plays guitar next to a drummer." Does this mean that "A woman plays guitar next to a drummer."?
A:
no