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 1053, it was the scene of the historical victory of Robert Guiscard over the papal troops under Pope Leo IX Link Information: none Question: How old was Robert Guiscard when he defeated the papal troops of Pope Leo IX?
[A]: Answer: none

[Q]: Context: the Japanese government again dispatched Un'yo in September 1875 under the command of Inoue Yoshika to provoke a military response Link Information: none Question: How long did Yoshika command Un'yo?
[A]: Answer: none

[Q]: Context: Mentions of an older construction, such as the one presented on a painting by Jan Matejko of king Bolesaw I of Poland striking the Golden Gate with his sword Link Information: Jan Alojzy Matejko (; also known as Jan Mateyko; 24 June 1838 1 November 1893) Question: What year was the artist who painted Boleslaw I of Poland striking the Golden Gate with his sword born?
[A]:
Answer: 1838