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

Guessing-game dialogue about one of the objects:
q: is it human?
a: No
q: is it a vehicle?
a: Yes
q: Is it a bomb squad?
a: No
q: is it a gray truck on the left of it?
a: Yes