A street sweeper patrols the sidewalk.
A street sweeper is patroling a sidewalk.
A police officer patrols the sidewalk.
The boy in the plaid shirt is dancing in the rain.
There are several people in a group.
A dog swimming through a river to catch a floating toy.
A young man is riding a skateboard.
A woman is walking up some stairs.
Some of the challenges present have no boundaries to them.