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'.

Context: Samuel James "Sam" Ervin Jr. (September 27, 1896April 23, 1985) Link Information: Ervin was a legal defender of the Jim Crow laws Question: How old was Ervin when enforcement of the Jim Crow laws ended?
Answer: 69

Context: FitzOsbern had been granted the Lordship of Striguil by his second cousin King William in gratitude for his support in the Norman conquest of England Link Information: none Question: During what years did the Norman conquest of England occur?
Answer: none

Context: the league lost a lawsuit filed by the original NASL stemming from the investments of Kansas City Chiefs owner Lamar Hunt and Elizabeth Robbie, the wife of Miami Dolphins owner Joe Robbie i Link Information: T Question: The ownership of which two soccer teams led the lawsuit filed against the NFL?

Answer: North American Soccer League