Objects in the image:
category: truck
category: bus
category: truck
category: person
category: truck
category: bus
category: person
category: bus
category: truck
category: person
category: car
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is it person?
a: No
q: is it truck?
a: Yes
q: is it green one leftmost?
a: No
q: next one second one in blue color?
a: No
q: third one in red yellow green?
a: Yes