Objects in the image:
category: person
category: person
category: chair
category: skateboard
category: snowboard
category: chair
category: chair
category: chair
category: person
category: chair
category: person
category: person
category: person
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is a person?
a: No
q: is a skateboard?
a: Yes
q: the skateboard in front?
a: Yes