In this task, you're given a statement, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.

Q: Context: She appeared as Brangäne in Wagner's Tristan und Isolde, as Fricka in his Die Walküre, as Ortrud in his Lohengrin, Link Information: t was composed between 1857 and 1859  Question: Which of Wagner's operas that Cavelti starred in was written first?

A: Answer:  Lohengrin,
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Q: Context: Samuel James "Sam" Ervin Jr. (September 27, 1896April 23, 1985) Link Information: Ervin was a legal defender of the Jim Crow laws Question: How old was Ervin when enforcement of the Jim Crow laws ended?

A: Answer: 69
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Q: Context: Darius was the son of Hystaspes and the grandson of Arsames. Link Information: Arsames ( Aršāma, modern Persian:،آرسام، آرشام‎ Arshām, Greek: ; – ca. 520 BC Question: When was Arsames born?

A:
Answer: 520 BC
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