Objects in the image:
category: person
category: person
category: truck
category: truck
category: motorcycle
category: person
category: car
category: person

Guessing-game dialogue about one of the objects:
q: is it a car/truck?
a: No
q: is it a person?
a: No
q: a tree?
a: No
q: is it on the firetruck?
a: No
q: motorcycle ??
a: Yes
q: the one by the red building?
a: Yes