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

Guessing-game dialogue about one of the objects:
q: a person?
a: Yes
q: main ??
a: No
q: left side?
a: Yes
q: Is it a trolley?
a: No
q: the man in white?
a: Yes