Complex sentence: Years later, Pitts became a leading lady in Erich von Stroheim's epic masterpiece, "Greed" (1924); based on this performance, von Stroheim labeled Pitts "the greatest dramatic actress".
Split into simpler sentences: Years later, she was the leading lady in Erich von Stroheim's "Greed" (1924). Based on her performance, von Stroheim labeled Pitts "the greatest dramatic actress".