Objects in the image:
category: person
category: person
category: person
category: person
category: chair
category: person
category: chair
category: person
category: person
category: person
category: person
category: person
category: person
category: person
category: tennis racket
category: chair

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is the person on the court?
a: No
q: it the person standing?
a: Yes
q: is the person on the left half of the photo?
a: No
q: is it one of the two persons walking in the direction to the right?
a: No
q: is it one of the two person standing at the rail?
a: No
q: is it a person in the background at the next court?
a: Yes
q: there are two fuzzy out of focus people standing there. it's one of those people?
a: Yes
q: is it the one on the left of that pair?
a: No
q: its the person in the background on the right?
a: No
q: ok. to clarify, there are two people standing, one in shorts, one in pants, watching the player in the foreground. It's NOT one of them?
a: No
q: its a person behind those two people I described?
a: Yes
q: is it a person?
a: Yes
q: is it a person on the court?
a: No
q: is it a person on the level directly above the court?
a: N/A
q: is it a person?
a: Yes