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

Guessing-game dialogue about one of the objects:
q: person ??
a: No
q: bike ??
a: No
q: tree ??
a: No
q: worn or used by biker?
a: Yes
q: helmet ??
a: No
q: glove ??
a: No
q: worn above waist line?
a: Yes
q: backpack ??
a: Yes
q: with yellow helmet guy?
a: Yes
q: safe to guess on the strap on his left shoulder?
a: No
q: is it marked behind his back?
a: Yes