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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: No
q: Is it a vehicle?
a: No
q: is it green?
a: No
q: is it a rock?
a: No