Complex sentence: Frank Albert Cotton (April 9,1930--February 20,2007) was the W.T. Doherty-Welch Foundation Chair and Distinguished Professor of Chemistry at Texas A&M University.
Split into simpler sentences: Frank Albert Cotton (April 9,1930--February 20,2007) was an American chemist. He was the W.T. Doherty-Welch Foundation Chair and Distinguished Professor of Chemistry at Texas A&M University.