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

Guessing-game dialogue about one of the objects:
q: person ??
a: Yes
q: against the clock?
a: No
q: blue shirt?
a: No
q: red shirt?
a: No
q: black shirt?
a: Yes