Objects in the image:
category: person
category: backpack
category: bus
category: person
category: person
category: cell phone
category: backpack
category: bus
category: person
category: person
category: person

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: No
q: Is it a bus?
a: No
q: Is it a building?
a: No
q: Bottom half of picture?
a: No
q: Is it a sign?
a: No
q: Is it a part of a bus?
a: No
q: Left half of picture?
a: No
q: so upper right quarter of picture?
a: No
q: Upper left?
a: No
q: Is a person wearing it?
a: Yes
q: Is it a backpack?
a: Yes
q: Is it blue?
a: No
q: So the black one at the center of the picture?
a: Yes