Objects in the image:
category: bus
category: person
category: person
category: traffic light
category: bus
category: car
category: person
category: bus
category: truck
category: traffic light
category: person
category: person
category: car
category: person
category: traffic light
category: car
category: person

Guessing-game dialogue about one of the objects:
q: is it a vehicle?
a: Yes
q: is it a bus?
a: No
q: it is a van?
a: No
q: car behind the van?
a: No
q: is it the row behind the van?
a: Yes
q: very back one ... only see the top?
a: Yes