Objects in the image:
category: person
category: backpack
category: person
category: cell phone
category: bicycle
category: person
category: bicycle
category: bicycle
category: person
category: bicycle
category: person

Guessing-game dialogue about one of the objects:
q: person ??
a: No
q: one of the four in the back?
a: No
q: sorry ....backpack?
a: No
q: bicycle ??
a: Yes
q: the front one?
a: Yes