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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it on a person or held by a person?
a: Yes
q: is it an umbrella?
a: No
q: is it a hat?
a: No
q: is it a bag?
a: Yes
q: bag on the guy with blue pants?
a: No
q: bag on guy on right with umbrella?
a: Yes