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

Guessing-game dialogue about one of the objects:
q: is it person?
a: No
q: is it in left?
a: No
q: is it front?
a: Yes
q: is it bus?
a: Yes