Definition: In this task, you're given a passage, 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'.
Input: Passage: Younessi began racing motorcycles at a young age and also competed in sports car racing. In 2011 he competed in the U.S. F2000 National Championship for Pabst Racing Services and JDC Motorsports in the series' National Class. He made seven starts finishing the season Fourth (4th) in championship standing in the National Class with a best finish of 12th overall in race 2 at Road America. In 2011 he also competed in the pair of F2000 Championship Series races at the Mid-Ohio Sports Car Course. In 2012 Younessi formed his own team to compete in the Firestone Indy Lights series and announced that he would compete in the full season. However, Younessi ultimately only made two race starts, at the season opener in St. Petersburg and in June in Detroit. He finished 21st in points. He also competed in Baltimore driving a Le Mans Prototype Challenge Car in the American Le Mans Series.
Link Information: The series was initially founded by Doug Powell in 1990 Question: How many years had the U.S. F2000 National Championship been running before Younessi competed in it for the first time?
Output:
Answer: 21