Directions:  These questions are based on the following information.

Ten persons namely Graham, Edison, Ford, Vinci, Tesla, Morse, Watt, Babbage, Jobs, and Newton are there in a family of three generations. There are three married couples in the family. Tesla is the youngest person in the family. Vinci is the sister-in-law of Ford who is not married to Graham. Babbage is the brother of Tesla. Morse is the mother of Jobs and married to the brother of Ford. Jobs has no siblings. Newton has one grandson and two granddaughters but no daughter. Edison is the sister of Vinci. Newton is the father-in-law of Edison. Graham is the son of Watt. Vinci is not married. Watt is married to Newton.