Definition: 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'.
Input: Context: Late in 1105, Emperor Heinrich V, the last of the Salian dynasty, had his father, Emperor Heinrich IV taken prisoner in Ingelheim Link Information: Holy Roman Emperor

Henry IV (; 11 November 1050 7 August 1106) Question: How much older was Emperor Heinrich's father than he was when he was taken prisoner in Ingleheim?
Output:
Answer: 31