Complex sentence: Willis Polk, a distinguished American architect in his own right, was engaged to be the structural designer and manager of construction who followed instructions of Mrs. Carolan to execute Sanson's French plans faithfully,.
Split into simpler sentences: Willis Polk, a distinguished American architect in his own right, was engaged to be the structural designer and manager of construction. He was instructed by Mrs. Carolan to execute Sanson's French plans faithfully,.