Objects in the image:
category: bus
category: person
category: train
category: bus
category: person
category: handbag
category: person
category: car
category: car
category: person
category: car
category: truck
category: person

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: Yes
q: In front of the trolley?
a: No
q: On the trolley?
a: Yes