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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it an article of clothing?
a: No
q: is it associated with the person?
a: No
q: is it on the ground?
a: Yes
q: is it one of the cones?
a: No
q: is it a skateboard?
a: No
q: is it red?
a: No
q: is it the grey thing on the red backpack?
a: No
q: is it the dark thing just to the right of that?
a: Yes