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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it sports gear?
a: No
q: is it a skate?
a: No
q: is it clothing?
a: No
q: is it a helmet?
a: No
q: is it touching a person?
a: No
q: on the building?
a: No
q: is it the pole/tree?
a: No
q: the bag on the floor?
a: Yes