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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a skateboard?
a: No
q: is it a bike?
a: No
q: is it something a person is wearing?
a: No
q: is it part of the building/structure behind the people?
a: No
q: is it a tree?
a: No
q: is it the bench?
a: No
q: is it laying on the sidewalk?
a: Yes
q: is it behind the man with a black top and light pants?
a: Yes
q: is it a specific thing?
a: Yes
q: is it white?
a: No
q: is it black?
a: Yes
q: is it on the bottom of the pile?
a: No
q: is it on the top of the pile?
a: Yes