Complex sentence: Another newcomer is the scandalous Major George Templeton (Michael Rennie), who admires lovely Evie Bishop (Jean Simmons), who has spent years in one sanatorium after another.
Split into simpler sentences: Another newcomer is the scandalous Major George Templeton (Michael Rennie), who admires lovely Evie Bishop (Jean Simmons). Evie has spent years in one sanatorium after another.