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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a skateboard?
a: No
q: at the background?
a: Yes
q: one of those group of things at the back?
a: Yes
q: the middle one with white thing?
a: N/A
q: something near it?
a: Yes
q: right side of it?
a: No
q: left side of it?
a: Yes
q: the one that looks like a bottle?
a: Yes
q: is it a bottle?
a: N/A