Objects in the image:
category: surfboard
category: person
category: bicycle
category: person
category: person
category: surfboard
category: person
category: surfboard
category: person
category: person
category: surfboard
category: person
category: backpack
category: person
category: person
category: person
category: bicycle
category: person
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is it a human?
a: No
q: is it a surfboard?
a: No
q: is it a black bag?
a: No