In a joint family of seven persons F,E,N,J,P,M and L., there are two married couples. ‘F’ is a house-wife and her husband is ‘E’. ‘J’ is the wife of ‘N’. ‘L’ is the grand-daughter of ‘F’. ‘E’ is the father-in-law of ‘J’ and father of ‘P’. ‘M’ is the son of ‘N’ and brother of ‘L’. How is ‘J’ related to ‘P’.