Objects in the image:
category: person
category: dining table
category: umbrella
category: person
category: cell phone
category: backpack
category: person
category: person
category: person
category: backpack
category: potted plant
category: person
category: chair
category: person
category: umbrella
category: handbag
category: chair
category: bicycle
category: potted plant

Guessing-game dialogue about one of the objects:
q: is it an entire person?
a: No
q: is the person wearing it?
a: Yes
q: Is the man wearing it?
a: Yes
q: just noticed the background people. Is the man furthest left with bike helmet wearing it?
a: No
q: is the man in the white shirt?
a: No
q: the one in the aqua blue?
a: Yes
q: is it a black strap?
a: Yes