Complex sentence: William Richard "W. R." Morton Keast (May 31,1888--May 23,1973) was an American architect from Philadelphia, Pennsylvania who was the chief designer of famed architect John T. Windrim.
Split into simpler sentences: William Richard "W. R." Morton Keast (May 31,1888--May 23,1973) was an American architect from Philadelphia, Pennsylvania. He was the chief designer of famed architect John T. Windrim.