No plumber defames any researcher.
Every manager is an entrepreneur.
No entrepreneur spys on any potter.
Some clown defames every blacksmith.
No researcher is a guard.
Every artist is a clown.
Every manager is a potter.
Every teacher is a guard.
No spy is an artist.
Some guard dazes some astronaut.
Every spy is an astronaut.
No sculptor is a plumber.
Some researcher is an artist.
Every blacksmith is a guard.
Some manager is not a guard.
No teacher dazes any guard.
Some astronaut is a sculptor.
No astronaut is a manager.
No teacher is an astronaut.
Every clown defames every entrepreneur.
Every manager is a teacher.
Some blacksmith is an entrepreneur.
Some researcher is a teacher.

This example is inconsistent.