Objects in the image:
category: bus
category: person
category: person
category: bicycle
category: backpack
category: person
category: bicycle
category: person
category: handbag
category: person

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: No
q: Is it a vehicle?
a: No
q: Is it on the bus?
a: Yes
q: Is it in front of the door?
a: N/A
q: Is it a part of the bus?
a: No
q: Is it one of the bikes?
a: No
q: Is it a part of one of the bikes?
a: No
q: Is it part of the electronic sign?
a: No
q: Is it a light?
a: No
q: Is it the hand rail?
a: No
q: Is it the door?
a: No
q: Is it in the doorway?
a: Yes
q: Is it part of the steps?
a: No
q: Is it a backpack?
a: Yes