Objects in the image:
category: person
category: backpack
category: person

Guessing-game dialogue about one of the objects:
q: is it a human?
a: No
q: is it red?
a: No
q: is it black?
a: Yes
q: is it a glove?
a: No
q: is it a backpack?
a: Yes
q: is it the backpack carried by the man?
a: Yes