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 in front?
a: N/A
q: is it person?
a: Yes
q: is it in left?
a: Yes
q: is it front one?
a: No