Q: Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.
Context: Lever House, designed by Gordon Bunshaft and Natalie de Blois (design coordinator) of Skidmore, Owings and Merrill and located at 390 Park Avenue in Midtown Manhattan, New York City, is a seminal glass-box skyscraper built in the International Style according to the design principles of Ludwig Mies van der Rohe.
Question: Who was the architect or designer of Lever House?
A:
gordon bunshaft