Complex sentence: When the film started production in the fall of 1945, Judy Garland was signed as Broadway singer-dancer Marilyn Miller, having just returned to California after a long New York honeymoon with her new husband, director Vincente Minnelli.
Split into simpler sentences: When the film started production in the fall of 1945, Judy Garland was signed as Broadway singer-dancer Marilyn Miller. Garland, who had just returned to California after a long New York honeymoon with her new husband, director Vincente Minnelli.