The exister contemplated the meaning of life.

There are many existents in the universe.

The existance of aliens is still a topic of debate.

There are many existers in the world.

There are many species in existence.

The theory suggests that multiple universes may be existable.

The existency of unicorns has been a topic of debate for centuries.

There are many existencies in the universe.

The concept of a perfect world is existible in philosophy.

The existability of aliens is still a topic of debate among scientists.