Question: Who was the director of the 1950 MGM musical film, choreographed by Eugene Loring, in which the actor who played Palmer Cortlandt on the soap opera "All My Children" starred?
Sentence (from "The Toast of New Orleans"): It starred Mario Lanza, Kathryn Grayson, David Niven, J. Carrol Naish, James Mitchell and a teenaged Rita Moreno.
Relevant evidence: No