Objects in the image:
category: skateboard
category: person
category: person
category: person
category: person
category: skateboard
category: bench
category: person
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is ti him?
a: No
q: is it person or stroller?
a: N/A
q: is it skateboard?
a: No
q: is it fence?
a: No
q: Is it the surface that he is about to land on?
a: No
q: is it on left top side?
a: No
q: right top side?
a: Yes