Question: Who appeared in 270 films between 1910 and 1952 and directed 38 silent films between 1915 and 1927, Richard Boleslawski or Howard M. Mitchell?
Sentence (from "Richard Boleslawski"): Richard Boleslavsky or Richard Boleslawski (February 4, 1889 – January 17, 1937) was a Polish theatre and film director, actor and teacher of acting.
Relevant evidence: Yes