Objects in the image:
category: person
category: person
category: person
category: person
category: person
category: motorcycle
category: person
category: person
category: motorcycle
category: person
category: person
category: backpack
category: person
category: person
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: bike ??
a: Yes
q: Does it have NYPD written on it?
a: No
q: the another police bike?
a: Yes