sentence1: Sumner Slichter was the brother of geophysicist Louis B. Slichter , father of physicist Charles Pence Slichter , and the grandfather of musician Jacob Slichter .
sentence2: Jacob Slichter was the brother of geophysicist Charles Pence Slichter , the father of the physicist Louis B. Slichter and the grandfather of the musician Sumner Slichter .