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

Guessing-game dialogue about one of the objects:
q: What make is this?
a: N/A
q: What engine does it have?
a: N/A