Complex sentence: Nicolas Lémery (November 17,1645--June 19,1715), French chemist, was born at Rouen who was one of the first to develop theories on acid-base chemistry.
Split into simpler sentences: Nicolas Lémery (November 17,1645--June 19,1715), French chemist, was born at Rouen. He was one of the first to develop theories on acid-base chemistry.