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

Guessing-game dialogue about one of the objects:
q: Is it a vehicle?
a: Yes
q: Is it a plane?
a: No
q: is it an airport-specific vehicle?
a: Yes
q: Is it a walkway/stairs vehicle?
a: No
q: Is there a person in dark yellow near it?
a: No
q: Does it fuel the planes?
a: Yes
q: Does it have a green stripe?
a: Yes