Objects in the image:
category: backpack
category: cell phone
category: backpack
category: person

Guessing-game dialogue about one of the objects:
q: it a person?
a: No
q: camera /?
a: No
q: phone /?
a: No
q: bag /?
a: Yes
q: it on the man?
a: Yes
q: left side?
a: No
q: left side bottom man wearing it?
a: No