Objects in the image:
category: skis
category: person
category: backpack
category: person
category: skis
category: person
category: person
category: skis
category: person
category: person
category: person
category: person
category: person
category: person
category: person
category: person
category: person
category: snowboard

Guessing-game dialogue about one of the objects:
q: is it person?
a: No
q: is it helmet?
a: No
q: is it surfboard?
a: Yes
q: is he sitting?
a: Yes