Objects in the image:
category: person
category: person
category: cell phone
category: backpack
category: person
category: person
category: person
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it the yellow tube?
a: No
q: is it the phone?
a: No
q: is the woman with the phone touching it?
a: No
q: is it the handrail?
a: No
q: is it a window?
a: No
q: is it something on the stairs that is not a person?
a: Yes
q: is it a hat?
a: No
q: is it to the left to the person in the blue shirt?
a: No
q: is it to the right of the person in the blue shirt?
a: Yes
q: is it above the row of three people?
a: No
q: is it being held by the person in the white shirt?
a: Yes