Sentence examples for exists would be from inspiring English sources

"Weird life," if it exists, would be something completely different.

This "fg", if it exists, would be aged roughly between 20 and 50.

Presumably, the main library, if one exists, would be near that, within easy reach.

The planet, if it exists, would be bigger than the Goblin or Pluto.

This of course is a bit of a hack and some easier method, if it exists, would be preferable.

It makes sense that the cult of "The Room," if it seriously exists, would be a Californian phenomenon.

There are various entities which, if they exist, would be candidates for necessary beings: God, propositions, relations, properties, states of affairs, possible worlds, and numbers, among others.

("The Collected Doonesbury," if it existed, would be the size of a wild boar).

She said, however, that pretending such relationships did not exist would be foolish.

Alas, the other universes, if they exist, would be invisible and unreachable.

It is widely assumed that immunostimulating agents, were they to exist, would be ideal in battling microorganisms.