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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: Yes
q: Are they in the crowd?
a: Yes
q: Are they sitting down?
a: No
q: Are they facing us?
a: No
q: Is it a male?
a: Yes
q: Are they in the right half of the picture?
a: Yes
q: Is a woman wearing the blue and green jacket in between them?
a: No
q: Are they wearing a dark suit?
a: No
q: Are they wearing khaki top?
a: N/A
q: Can you only see their head?
a: No
q: Are they white?
a: Yes
q: Do they have a full head of hair?
a: Yes
q: Are they wearing a blue backpack?
a: No
q: Is it a person?
a: Yes
q: Is it a spectator?
a: No
q: Is it a person on the tennis court?
a: No
q: Are they in the way back, walking past?
a: Yes
q: Are they on the right side of the photo?
a: Yes
q: We'll use the guy in bright blue striped as reference.  Is it to the right of the guy in the bright blue shirt?
a: No
q: Is it between the blue shirt guy and the girl in the blue/green jacket?
a: No
q: Are they wearing a hat?
a: No
q: Is it the guy with the crew cut wearing a dark shirt.  By the man with the red hat?
a: No
q: Is it a man?
a: Yes
q: Are they wearing a dark shirt?
a: No
q: Are they wearing a hat?
a: No
q: Do they have a blue backpack?
a: No
q: Are they african american?
a: No
q: Can you see their entire head?
a: Yes
q: Are they wearing khaki?
a: No
q: Is he wearing a suit?
a: No