Instructions: In this task, you're given a context, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both context and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the context or linked information.
Input: Context: He went on to perform at many of America's leading opera houses and festivals, including the Lyric Opera of Chicago, San Francisco Opera, Los Angeles Opera, Seattle Opera, New York City Opera, Dallas Opera, the Opera Company of Philadelphia Link Information: Another unusual role for him was Houston Grand Opera Answer: San Francisco Opera
Output:
Which opera house Easterlin has performed in during his career is the oldest?