Complex sentence: The supporting cast includes George "Gabby" Hayes, acrobatic comedian Al St. John, and stuntman Yakima Canutt, and the movie was written and directed by Robert N. Bradbury.
Split into simpler sentences: The supporting cast includes George "Gabby" Hayes, the acrobatic comedian Al St. John, and the stuntman Yakima Canutt. The movie was written and directed by Robert N. Bradbury.