Objects in the image:
category: person
category: person
category: sports ball
category: bench
category: tennis racket
category: person

Guessing-game dialogue about one of the objects:
q: person ??
a: No
q: ball ??
a: No
q: bat ??
a: No
q: is it in the left half of the picture?
a: N/A
q: black thing right in the middle of the image, somewhat behind the player?
a: Yes