Complex sentence: Greta Celeste Gerwig (born August 4,1983) is an American actress, screenwriter, and director who rose to prominence through her association with the mumblecore film movement.
Split into simpler sentences: Greta Celeste Gerwig (born August 4,1983) is an American actress, screenwriter, and director. Gerwig first came to prominence through her association with the mumblecore film movement.