Complex sentence: Robert C. Stalnaker (born 1940) is an American philosopher, who is Laurence S. Rockefeller Professor of Philosophy at the Massachusetts Institute of Technology and is a Fellow of the American Academy of Arts and Sciences and a Corresponding Fellow of the British Academy.
Split into simpler sentences: Robert C. Stalnaker (born 1940) is an American philosopher, who is Laurence S. Rockefeller Professor of Philosophy at the Massachusetts Institute of Technology. He is a Fellow of the American Academy of Arts and Sciences and a Corresponding Fellow of the British Academy.