To do that, Nash, on a wager, disposed of a deep problem that had baffled the profession since the 19 th  He showed that any Riemannian manifold possessing a special kind of smoothness can be embedded in Euclidean space.
Nash made a bet and got rid of a problem that had been a problem for a long time.
Nash's disposal was not a big deal because there really hadn't been a problem to start with.
People playing outside.
Since 1970 productivity dropped
There is a person outside.
The sign is blue.
Tommy let the two birds go.
The sailor is eating a sandwich.