In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it, i.e., the proper nouns in the passage. Your job is to determine whether information from more than one term is needed to answer the question. Indicate your choice as 'a' for Yes or 'b' for No.

Question: When was the play by Richard Strauss written? Passage:He was an ensemble member of Theater Basel from 1955 to 1957. He was then a member of the Stadtische Buhnen Oberhausen (19581959), Stadttheater Gieen (19591960), Opernhaus Kiel (19601962) and the Staatstheater Kassel (19621965). In Kassel, he appeared as Ceccho in the world premiere of the complete version of Henze's Konig Hirsch on 10 March 1963, and as the Father in Jan Cikker's Abend, Nacht und Morgen on 5 October 1963. He sang at the Opernhaus Dortmund from 1965 to 1968, where he appeared as Valzacchi in Der Rosenkavalier by Richard Strauss in the opening performance of the new opera house on 3 March 1966. Other roles there included the Narrator in Orff's Der Mond, Goro in Puccini's Madama Butterfly, the Knusperhexe in Humperdinck's Hansel und Gretel, Wenzel in Smetana's Die verkaufte Braut and Wolfgang Capito in Hindemith's Mathis der Maler. He took part in the premiere of Eli by Walter Steffens in 1967.
b