Definition: In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.
Input: Question: How long had David Stern been Commissioner of the NBA for the year Fryer retired from his position as referee? Passage:After retiring as a player, Fryer embarked upon a lengthy career as an NBA referee, beginning in 1978. As of the beginning of the 2006–07 NBA season, he officiated 1,649 regular season, 145 playoff, and 11 NBA Finals games as well as the 1998 All-Star Game. He was also one of three former NBA players (Leon Wood and Haywoode Workman) who officiated in the league. During a 2002 playoff game between the Charlotte Hornets and Orlando Magic, Fryer and his officiating crew disallowed a field goal made by the Hornets Baron Davis. Davis received an inbound pass with 0.7 seconds remaining and successfully made the shot before the buzzer sounded. This incident led Commissioner David Stern to consider the use of instant replay in NBA games. Considered one of the top-rated referees in the league, he retired in 2007 following Game 3 of the 2007 NBA Finals having officiated 1,806 NBA games. It was reported that Fryer was dissatisfied over the current state of management of officials.


b