A woman is watching her bowling ball roll down the lane towards the pins.
a woman is watching bowling
a man is watching bowling
a child is swimming in the river.
Jim Thompson mysteriously disappeared in the Highlands after going for a walk.
Woman paying a cashier.
The boat is attached to a trailor
You didn't get to vote at the last one, did you?
By the way, the tragedy of the commons is just a theoretical construct.