What was the longest battle of World War I?
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The German invasion of Belgium was a significant event in World War I.
The German invasion of Belgium was part of World War I .
What was the longest battle of World War I?</s>The [unused1]German invasion of Belgium                [unused2] was a significant event in World War I.
What was the longest battle of World War I?</s>The German invasion of Belgium was a significant event in World War I.
What was the longest battle of World War I?</s>The [unused1]German invasion of Belgium                [unused2] was part of World War I .
What was the longest battle of World War I?</s>The German invasion of Belgium was part of World War I .
What was the longest battle of World War I?</s>World War I,0,World War I,World War I,significant event,[unused1]German invasion of Belgium[unused2],[unused1]German invasion of Belgium[unused2],part of,World War I,[unused1]German invasion of Belgium[unused2],0,[unused1]German invasion of Belgium[unused2]
What was the longest battle of World War I?</s>World War I,0,World War I,World War I,significant event,German invasion of Belgium,German invasion of Belgium,part of,World War I,German invasion of Belgium,0,German invasion of Belgium