Objects in the image:
category: bicycle
category: backpack
category: backpack
category: person
category: car
category: car
category: fire hydrant
category: car
category: bicycle
category: person
category: person
category: car
category: car
category: car
category: person
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is it person?
a: No
q: is it a car?
a: No
q: is it a bike?
a: Yes
q: the gray one from the guy?
a: Yes