Question: Yewbarrow is a fell in the English lake district that lies immediately north of the head of what lake that is almost 3 miles long and more than 1/3 mile wide? 
Sentence (from "Radok Lake"): Radok Lake is a meltwater lake about 4 miles long and marked by a slender glacier tongue feeding into it from the west, lying 3 miles south-west of Beaver Lake and 15 miles south-east of the Aramis Range, Prince Charles Mountains.
Relevant evidence: No