A motocross rider leans his bike to the side as he prepares to wind around the rest of the racetrack.
The motocross rider is riding on a racetrack.
A man rubs his ear.
The nobility had to shoulder the burden of paying for the palace.
The children are playing outside.
Plants haven't been discounted much yet.
There is a kid sleeping in his pajamas.
The girl is running around the park.
Willingness to pay and willingness to accept are only comparable when the environmental quality is large.