Q: In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.
Question: Who was the music director for Glyndebourne Festival Opera when Cook was touring with them? Passage:It wasn't until the early 1970s when Cook won a prize in an important singing competition in Chicago, that she drew the attentiont of the opera world. She made her international opera debut in 1971 singing Zerbinetta in Richard Strauss's Ariadne auf Naxos touring with the Glyndebourne Festival Opera. In 1972 she joined the roster at the Theater Bremen as one of their principal sopranos, where she remained until 1975 and continued to perform as a guest until 1980. She appeared there and in other German opera houses in roles such as Adina in Donizetti's L'elisir d'amore, Constanze in Mozart's Die Entführung aus dem Serail, Despina in his Così fan tutte, the title role in Donizetti's Lucia di Lammermoor, Olympia in Offenbach's Les contes d'Hoffmann, Philine in Mignon by Ambroise Thomas, the Queen in Die Verurteilung des Lukullus, the Queen of the Night in Mozart's Die Zauberflöte, and Zerbinetta.

A:
b