Q: You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
Category: FAMOUS AMERICANS 
Clue: He coined the term "usonian" for his U.S. designs that were meant to bring beauty & humanity to ordinary people
A:
frank lloyd wright