Complex sentence: Herbert Asbury (September 1,1889--February 24,1963) was an American journalist and writer who is probably best known for his book "The Gangs of New York", which Martin Scorsese adapted for a 2002 film.
Split into simpler sentences: Herbert Asbury (September 1,1889--February 24,1963) was an American journalist and writer. He is probably best known for his book "The Gangs of New York", which Martin Scorsese adapted into a 2002 film.