Objects in the image:
category: baseball bat
category: person
category: sports ball
category: person
category: person
category: person
category: person
category: person
category: baseball glove

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: one of the three batter/catcher/umpire?
a: Yes
q: is it the umpire?
a: No
q: is it the catcher?
a: Yes