Teacher: 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'.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Context: During Operation Market Garden, the attempt to seize a bridgehead across the Rhine in the Netherlands, the 704th dropped supplies to allied troops near Nijmegen. Link Information: Operation Market Garden was a failed World War II military operation fought in the Netherlands from 17 to 25 September 1944. Question: When did the operation during which the 704th dropped supplies to allied troops near Nijmegen begin?
Solution: from 17 to 25 September 1944
Reason: The context describes the 704th's actions during Operation Market Garden, and the answer specifies when the operation happened.

Now, solve this instance: Context: The family moved to Holyhead in 1918 because of his father's work in the Merchant Navy Link Information: none Question: How large was the Merchant Navy during the year that R.S. Thomas moved to Holyhead?
Student:
Answer: none