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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: Yes
q: Are they in the group of four workers?
a: No
q: Are they in the passenger line?
a: Yes
q: Are they on the stairs?
a: No
q: Are they in the first 4 from the left?
a: No
q: 5th from left?
a: No
q: 6th from left?
a: No
q: the last in line?
a: Yes