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

Guessing-game dialogue about one of the objects:
q: is this a vehicle?
a: Yes
q: is it green?
a: Yes
q: is it in the background behind the large green bus?
a: Yes