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 plane?
a: No
q: is it bus?
a: No
q: is it people?
a: Yes
q: Is it one of the many people?
a: Yes
q: is it one people or a group of people?
a: Yes
q: is it one people?
a: Yes
q: is it wearing a green vest?
a: No
q: is it wearing red shirt?
a: No
q: is it people near the bus?
a: No
q: is it people near the wings?
a: No
q: is it people near the front entrance?
a: Yes
q: is it in front of the entrance?
a: No
q: is it the one who hold yellow bag?
a: Yes