Objects in the image:
category: person
category: person
category: car
category: person
category: car
category: car
category: person
category: traffic light
category: car
category: person
category: traffic light
category: car
category: bus
category: person
category: car
category: car
category: person
category: backpack

Guessing-game dialogue about one of the objects:
q: is it the trolley?
a: No
q: is it a vehicle?
a: No
q: is it a person?
a: Yes
q: in the red jacket?
a: No
q: in the black jacket?
a: Yes