Complex sentence: Tokyo Sunshine Boys grew in popularity over the next ten years eventually producing the immensely popular play "12 Gentle Japanese", a parody of Reginald Rose's "12 Angry Men".
Split into simpler sentences: Tokyo Sunshine Boys grew in popularity over the next ten years. They eventually produced the immensely popular play "12 Gentle Japanese", a parody of Reginald Rose's "12 Angry Men".