Objects in the image:
category: backpack
category: backpack
category: car
category: person
category: car
category: person
category: surfboard
category: person
category: backpack
category: backpack
category: person

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a car?
a: No
q: is it a bag worn by one of the people?
a: Yes
q: is the bag on the left-most person?
a: No
q: is it the black bag on the middle person?
a: No
q: is it the black bag on the person holding the surfboard?
a: Yes