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: The first book starts in 42 AD. Link Information: The first book starts in 42 AD. The books cover the experiences of the two soldiers, initially as experienced centurion and new optio, in battles in Germania and the invasion of Britain by Claudius as part of the Legio II Augusta. Question: How old was Claudius at the start of the first book?
Answer: 12