Objects in the image:
category: backpack
category: person
category: frisbee
category: person
category: person
category: person
category: person
category: person
category: person
category: person
category: dog

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is a frisbee then?
a: No
q: shoes? then a?
a: No
q: then a bag?
a: No
q: something someone is wearing?
a: No
q: is it to the right of the dude in blue shirt?
a: Yes
q: you mean those things that looks like bags?
a: Yes
q: is it black?
a: Yes