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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is it the skateboarder?
a: No
q: are they sitting?
a: Yes
q: are they the leftmost person, girl with long black hair?
a: Yes