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

Guessing-game dialogue about one of the objects:
q: is this a person?
a: No
q: is this used by a person?
a: Yes
q: is this an equipment for safety?
a: No
q: is this an equipment with two pieces?
a: No
q: is this used by an adult?
a: Yes