Question: Which film has the director who is older than the other, Robert Et Robert or Strange Alibi? 
Sentence (from "Strange Alibi"): Strange Alibi is a 1941 American crime film directed by D. Ross Lederman, written by Kenneth Gamet, Leslie T. White and Fred Niblo Jr., and starring Arthur Kennedy, Joan Perry, Jonathan Hale, John Ridgely, Florence Bates and Charles Trowbridge.
Relevant evidence: Yes