In this task, you are given a context paragraph, a question based on that and corresponding answer of a question. Your task is to generate supporting fact/knowledge from context paragraph which helps in answering a given question.
Q: William Martin (born 13 April 1898 ?) was an American classical tenor. Born in Massachusetts, he studied singing with Leveret Merrill, A Sujol, and Florence Holtzman. A graduate of Harvard University, he was for many years a member of the Harvard Glee Club. He made his professional opera debut in 1923 in the title role of Jules Massenet's "Werther". He was committed to the Opera-Comique in Paris from 1925-1929 where he notably sang the role of Philipp in the world premiere of Lucien Chevaillier's "Le poeme du soir". In 1927 he and Mary McCormic became the first two Americans to appear in leading roles at the Opera National de Paris, respectively portraying the title role and the role of Marguerite in Charles Gounod's "Faust". In 1929 he had a major success at the Palais Garnier as the Duke of Mantua in Giuseppe Verdi's "Rigoletto". In 1930 he sang Romeo to Grace Moore's Juliette in Gounod's "Romeo et Juliette" at the Opera Royal de Wallonie. Martin is best remembered today for creating the role of Amelia's lover in the world premiere of Gian Carlo Menotti's "Amelia Goes to the Ball" on 1 April 1937 at the Philadelphia Academy of Music. Question: What opera that starred William Martin was based on a play written by William Shakespeare? Answer: Romeo et Juliette
A:
In 1930 he sang Romeo to Grace Moores Juliette in Gounods Romeo et Juliette at the Opera Royal de Wallonie.