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: In the winter of 1915, during the Serbian Army's retreat across Albania to the Greek island of Corfu Link Information: Throughout the journey across the mountains, around 70,000 soldiers and 140,000 civilians froze, starved to death, died of disease or were killed by hostile Albanian tribes between November 1915 and January 1916 Question: How long did the army's retreat to Corfu take?

A: Answer: 2
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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: In 1897 he went to Cornell University as an assistant professor, and in 1901 to Stanford University as associate professor. In 1906 he went to University of Illinois where he taught until retirement in 1931. Link Information: none Question: How many of the universities George worked at from 1897 on are ivy league schools?

A:
Answer: none
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