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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a backpack?
a: No
q: is it in the truck?
a: No
q: is it a truck?
a: Yes
q: the one following?
a: Yes