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

Guessing-game dialogue about one of the objects:
q: person ??
a: No
q: surf board?
a: No
q: car / truck?
a: Yes
q: white one on the bridge?
a: No
q: black one which only the roof can be seen?
a: N/A
q: something near the bus?
a: N/A
q: is it the bus?
a: Yes