Objects in the image:
category: traffic light
category: person
category: person
category: person
category: traffic light
category: person
category: truck
category: traffic light
category: traffic light
category: person

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a vehicle?
a: No
q: is it part of a vehicle?
a: No
q: is it being used or worn by a person?
a: No
q: is it a traffic signal?
a: Yes
q: is it green?
a: Yes
q: is it on the left half of the screen?
a: Yes