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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: No
q: Is it a bike?
a: No
q: Is it on/part of a building?
a: No
q: Is it on a person?
a: No
q: Is it the yellow sign?
a: No
q: Is it part of the road?
a: No
q: Is it a building?
a: No
q: Is it on the sidewalk?
a: No
q: Is it in a window?
a: No
q: Is it on the left half of the screen?
a: No
q: So it's on the right half?
a: Yes
q: Is it on the top half of the screen?
a: No
q: Is it part of a bike?
a: Yes
q: Is it a wheel?
a: No
q: Is it part of the girl's bike?
a: Yes
q: Is it the rack on the back wheel?
a: No
q: Is it the handlebar?
a: No
q: Is it a pedal?
a: No
q: Is it on the front half of the bike?
a: No
q: Is it the spokes of the back tire?
a: No
q: Is it small?
a: Yes
q: Would I have any luck if I just tried guessing with what information I have?
a: No
q: Is it that weird thing clamped on in front of the rack?
a: No
q: Is it the cover on the top of the tire?
a: No
q: Is it part of the tire?
a: No
q: Is it in front of the tire?
a: No
q: So it is on top of the tire?
a: No
q: Is it in the center of the tire?
a: No
q: Is it above the tire?
a: No
q: Is it below the tire?
a: No
q: Am I likely to ever guess it?
a: No
q: do you think that by guessing i might find it?
a: N/A