Objects in the image:
category: traffic light
category: traffic light
category: train

Guessing-game dialogue about one of the objects:
q: what color is it?
a: N/A
q: is it the train?
a: No
q: is it the train track?
a: No
q: is it the signal?
a: Yes
q: which signal is it?
a: N/A
q: is the signal yellow?
a: No
q: is the signal red?
a: Yes