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'.
Q: Context: it was not until the fourth Battle of Monte Cassino (Operation Diadem) in May 1944 that I Canadian Corps fought its first battle as a corps. Link Information: Allies against the Winter Line in Italy Question: Who did the I Canadian Corps fought against at Monte Cassino when they first operated as an independent unit?
A:
Answer: Winter Line