Complex sentence: Tom Veitch (born September 26) is an American writer, best known for his contributions to the Dark Horse Comics line of Star Wars comic books, primarily "Dark Empire" and "Tales of the Jedi".
Split into simpler sentences: Tom Veitch (born September 26) is an American writer. He is also known for his contributions to the Dark Horse Comics line of Star Wars comic books, primarily "Dark Empire" and "Tales of the Jedi".