Question: Which film has the director who is older than the other, Kalpavriksham or Castle Freak? 
Sentence (from "J. Sasikumar"): Nambiathusseril Varkey John( 14 October 1927 – 17 July 2014), better known by his screen name Sasikumar, was an Indian film director who worked in Malayalam cinema.
Relevant evidence: Yes