Objects in the image:
category: person
category: train
category: person
category: train
category: backpack
category: person
category: person
category: person
category: person
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is it a train?
a: Yes
q: is it red in the front?
a: Yes
q: is it the one seen in the front?
a: Yes