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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is it a group?
a: Yes
q: are they at the front of the plane?
a: No
q: are they at the back of the plane?
a: No
q: are they near the bus?
a: No
q: it a passenger?
a: Yes