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

Guessing-game dialogue about one of the objects:
q: is a skateboard?
a: No
q: is a person?
a: No
q: is it chair or bench?
a: No
q: something person wearing?
a: No
q: plant  ??
a: No
q: something in crowd?
a: Yes
q: is it on left of image?
a: Yes
q: is it dog?
a: No
q: some sort of animal?
a: No
q: is it bag?
a: Yes
q: the leftmost one black one?
a: Yes
q: on floor?
a: No
q: behind a girl in red?
a: Yes