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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: Yes
q: Is he shirtless?
a: No
q: Is he facing front?
a: Yes
q: Is he behind the net?
a: Yes
q: Is he holding a racket?
a: N/A
q: Is it a person?
a: Yes
q: Is he shirtless?
a: No
q: Is he holding a racket?
a: No
q: Is he behind the net?
a: Yes
q: Is he playing?
a: No
q: Can his face be seen?
a: Yes
q: Is he in white?
a: Yes
q: Is he standing on the sand?
a: Yes
q: Is he holding something in his right hand?
a: No
q: Is he far?
a: Yes
q: Is he with a group of people?
a: Yes
q: Is he standing near a shirtless guy?
a: Yes
q: Is he behind the shirtless guy?
a: Yes
q: Does the shirtless guy have his arms crossed?
a: Yes