Complex sentence: Drifter William Bonney (Paul Newman), known as'Billy the Kid' loses his horse and is befriended by cattle boss Tunstall, known as'The Englishman', who is soon murdered by corrupt rival cattlemen led by the local sheriff.
Split into simpler sentences: Drifter William Bonney (Paul Newman), known as "Billy the Kid", befriends a cattle boss named Tunstall, who is known as "The Englishman". Tunstall is murdered by corrupt rival cattlemen led by the local sheriff.