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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it one of the bikes?
a: No
q: is it the bus?
a: No
q: is it the blue car?
a: No
q: is it a bag?
a: Yes
q: is it the black bag on the bike next to the blue car?
a: Yes