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

Guessing-game dialogue about one of the objects:
q: is it human?
a: No
q: is it the bus?
a: No
q: is it a bike?
a: No
q: is it a street sign?
a: No
q: Is it something on a human (watch or hat or glasses, etc)?
a: Yes
q: is it a bookbag?
a: Yes
q: is it on a guy wearing pink?
a: Yes