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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a backpack?
a: Yes
q: the grey one near the man?
a: No
q: the tall green and red one?
a: No
q: the black one in the middle?
a: No
q: the green and brown one?
a: Yes