Objects in the image:
category: backpack
category: person
category: person
category: person
category: skateboard
category: person
category: person
category: skateboard
category: person
category: person
category: skateboard
category: person
category: person
category: person
category: person
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is it a skate board?
a: No
q: is it person?
a: Yes
q: on e skate?
a: No
q: is the person sitting?
a: No
q: is the person on rollers?
a: No
q: the guy in black at the right edge?
a: No
q: the girl in white in front of him?
a: No
q: is the person in the background?
a: Yes
q: is it wearing black shorts?
a: No
q: is it the guy at the left of the guy wearing black shorts and white shirt?
a: No
q: is it wearing white shirt, black jacket and grey pants?
a: No
q: is the person holding a yellow skate?
a: No
q: the guy in whit shirt next to him?
a: No
q: the person is on a skate board?
a: No
q: is near the group of sitting people at the left?
a: Yes
q: Is it the girl with the white jacket walking away?
a: Yes
q: is it person?
a: Yes
q: is the person on a skate?
a: No
q: is the person sitting?
a: No
q: is the person on roller skates?
a: No
q: is the person wearing white shirt?
a: No
q: is the person holding a yellow skate?
a: No
q: is the person in the left half of the photo?
a: Yes
q: is it the guy standing up near the sitting group?
a: No
q: is the person behind the group sitting?
a: No
q: is the person wearing blue?
a: No
q: wearing all black?
a: Yes
q: can we see its face?
a: No
q: is he in between two guys with white shirt?
a: Yes