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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a skateboard?
a: No
q: is it a helmet?
a: No
q: is the person having it?
a: Yes
q: is it the glass?
a: No
q: is it the stick in his hand?
a: No
q: is it a shoe?
a: No
q: is it a clothes?
a: No
q: is it a gloves?
a: No
q: is it with the first person?
a: No
q: second one have?
a: Yes
q: is it in his packet?
a: Yes
q: is it in his left packet?
a: Yes
q: in the shirt?
a: No
q: in the pant?
a: No
q: Is it in the back pack?
a: N/A
q: in the back bag?
a: Yes
q: is it a bag?
a: Yes