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: until his father's government was defeated in the federal election on May 22, 1979 Link Information: It resulted in the defeat of the Liberal Party of Canada after 11 years in power under Prime Minister Pierre Trudeau Question: How many years did Justin's father's party have power before being defeated in the 1979 election?
A:
Answer: 11 years