Objects in the image:
category: person
category: traffic light
category: person
category: traffic light
category: suitcase
category: person
category: person
category: car
category: car
category: car
category: person
category: person
category: traffic light
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is it a stoplight?
a: Yes
q: Is it a specific light, like the green one?
a: No
q: is it the set of lights to the left?
a: Yes