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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is the person on a bike?
a: No
q: is the person on a skateboard?
a: Yes
q: is the person sitting on a skateboard?
a: No
q: is the person standing next to a red crate?
a: No