Objects in the image:
category: car
category: person
category: skateboard
category: skateboard
category: car
category: car
category: skateboard
category: person
category: bicycle
category: bicycle
category: backpack
category: person
category: bicycle
category: bicycle
category: backpack

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a bike?
a: No
q: is it a skateboard?
a: No
q: is it a car?
a: No
q: is it on a person?
a: No
q: is it the place where you skate?
a: No
q: is it the bag by the tree?
a: No
q: is it a hat or helmet?
a: No
q: is it the wall?
a: Yes