Detailed Instructions: 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'.
Problem:Context: Adair's first major battle was in the pursuit of the retreating German Army to the Hindenburg Line. Link Information: The Hindenburg Line (German: , Siegfried Position) was a German defensive position built during the winter of 19161917 on the Western Front during the First World War. The line ran from Arras to Laffaux, near Soissons on the Aisne. Question: How long was the fortification that the German Army retreated to?
Solution:
Answer: The line ran from Arras to Laffaux, near Soissons on the Aisne