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.

Q: Context: He is one of the six main people featured in the documentary film Meet the Mormons released October 10, 2014 Link Information: Meet the Mormons is a 2014 American documentary film directed by Blair Treu  Answer: Blair Treu

A: Who directed the documentary Ken was featured in?
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Q: Context: Don was voiced by Brian Stack in "Piranha Germs" Link Information: Among the characters he has portrayed: Answer: Dick Cheney

A: How many other characters has the voice actor for Don in "Piranha Germs" played?
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Q: Context: Yorke's first singles as a solo artist were as a featured vocalist on the singles "El President" by Drugstore (which reached the top 20 in the UK) and "Rabbit in Your Headlights" by Unkle. Link Information: The band was formed via a flat-share in East London, when Monteiro and American drummer Mike Chylinski met. They were joined by guitarist Dave Hunter and soon released their debut single, "Alive", on their own label Honey Records in 1993. Answer: U.N.K.L.E.

A:
Which of the two groups that Yorke was a featured vocalist for at the beginning of his career as a solo artist was created at an earlier date?
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