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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it the skateboard?
a: No
q: is it under the skateboard?
a: No
q: is it to the left of the guy?
a: Yes
q: is it part of the course?
a: No
q: is it the boys bike?
a: Yes