Given the task definition and input, reply with output. 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'.

Context: He was present at the Battle of Manzikert in 1071, where he refused to join the fray Link Information: The Battle of Manzikert was fought between the Byzantine Empire and the Seljuk Empire on 26 August 1071 Question: How long did the battle where Roussel de Bailleul refused to fight last?
Answer: 1