Objects in the image:
category: person
category: person
category: backpack
category: backpack
category: person
category: skateboard
category: person
category: person
category: person
category: person
category: person
category: person
category: bicycle
category: backpack
category: person
category: bicycle
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is the person riding something?
a: No
q: is the person on the street?
a: Yes
q: is the person wearing gray?
a: No
q: is he on the right side of the street?
a: Yes
q: see the group of 3 guys walking on the street on the right side? is it one of them?
a: Yes
q: is it the one in black on the left?
a: Yes