Objects in the image:
category: person
category: backpack
category: person
category: dog
category: sports ball
category: person
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is it the dog or something on him?
a: Yes
q: is it the ball on his mouth?
a: No
q: is it the dog himself? say no if its only part of him?
a: Yes