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

Guessing-game dialogue about one of the objects:
q: Is a plane?
a: No
q: Is a car?
a: No
q: Is a person?
a: No
q: Is a truck?
a: Yes
q: Behind the engine?
a: Yes
q: On the left side of the left engine?
a: Yes