Objects in the image:
category: person
category: backpack
category: person
category: person
category: person
category: person
category: person
category: backpack
category: bus
category: person
category: bus
category: person
category: person
category: person
category: person
category: person
category: bus
category: bus
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 a sign?
a: No
q: is it a building?
a: No
q: is it a tree?
a: No
q: is it a sandbag?
a: No
q: is a person wearing it?
a: Yes
q: is it a backpack?
a: Yes
q: does it belong to the gent in the front?
a: No
q: the gent with his side to us at the bus stop?
a: Yes