Question: W. S. Van Dyke and Frank Scheffer were both involved in films?
Sentence (from "Frank Scheffer"): Frank Scheffer (born 1956 in Venlo) is a Dutch cinematographer and producer of documentary film, mostly known for his work "Conducting Mahler" (1996) on the 1995 Mahler Festival in Amsterdam with Claudio Abbado, Riccardo Chailly, Riccardo Muti and Simon Rattle.
Relevant evidence: Yes