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

Guessing-game dialogue about one of the objects:
q: is a person?
a: No
q: is a bus?
a: No
q: is a bag?
a: Yes
q: is it a backpack?
a: Yes
q: on the guy in red?
a: No
q: in front of him?
a: Yes