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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: on the ramp?
a: No
q: to the left of the red shirt person on the ramp?
a: Yes
q: wearing red shirt?
a: No
q: to the left of the red shirt person in the front row?
a: No
q: is it a female?
a: No
q: wearing a blue shirt?
a: No
q: wearing a green shirt?
a: Yes
q: in the front row?
a: Yes