Objects in the image:
category: backpack
category: person
category: backpack
category: person
category: traffic light
category: person
category: person
category: traffic light
category: bicycle
category: bicycle
category: traffic light
category: train
category: backpack
category: motorcycle
category: person

Guessing-game dialogue about one of the objects:
q: is it a vehicle?
a: Yes
q: is it the train?
a: Yes
q: is it the whole train?
a: Yes