Sentence examples for is known to exist from inspiring English sources

No footage is known to exist.

No complete collection is known to exist.

No original cut is known to exist.

No negative of "Falling Soldier" is known to exist.

No print or engraving is known to exist.

(Only one canceled copy of each is known to exist).

Nonlinear behaviour is known to exist in power ultrasonic systems.

The smallpox virus is known to exist only in laboratories in the United States and Russia.

An American detention facility of some sort is known to exist on Diego Garcia.

No contemporaneous public record of someone's presence at Homan Square is known to exist.

In areas where coal is known to exist, closely spaced drill-hole patterns are required.