Complex sentence: Stéphan Guérin-Tillié is a French actor, director, and screen writer, mosty known for his role in "Just a Question of Love" ("Juste une question d'amour").
Split into simpler sentences: Stéphan Guérin-Tillié is a French actor, director, and screen writer. He is most known for his role in "Just a Question of Love" ("Juste une question d'amour").