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.

Example Input: Question: Which university's football team that Bradford played against after his return had a better 2009 season record? Passage:However, before the season began, Gresham suffered a season-ending injury. During the season opener against BYU, Bradford suffered an injury to his shoulder that forced him to sit out the next several games. The Sooners would go on to lose that game and their fourth game against Miami. Bradford returned for game number five against Baylor, but reinjured his shoulder the next week against Texas, ending his season and giving the Sooners their third loss of the season. The Sooners would continue to suffer many injuries throughout the remainder of the season including losing offensive linemen Jarvis Jones and Brody Eldridge, and defensive players Tom Wort, DeMarcus Granger and Auston English for the season. With freshman Landry Jones now leading the offense, the Sooners would go on win every home game from that point forward, including a season-ending win over in-state rival Oklahoma State, extending their NCAA-leading home winning streak to 30 games. However, the Sooners would also lose all but one of their away games. Oklahoma ended the regular season with seven wins and five losses (5–3 in the Big 12). The game marked Oklahoma's third appearance in the Sun Bowl. They were a perfect 2-0 in their previous games. In 1981, they defeated Houston 40–14, and in 1993, they defeated Texas Tech 41–10.

Example Output: b

Example Input: Question: Which manager of Port Vale FC had the best record during the 1950s? Passage:The first confirmed non-English manager during peacetime was Jock Cameron, who held the job for a year following World War I. Freddie Steele was a highly successful manager, who took the club to their second Third Division North title in 1953–54. In 1957 Scotsman Norman Low took the managerial reins, winning the Fourth Division title in 1958–59. The next manager of note was Sir Stanley Matthews, who was full-time manager for less than a year; his resignation followed a scandal involving players' pay. Widely considered to be the club's greatest ever manager, John Rudge led the "Valiants" to cup glory in 1993; his best success was the league however, securing three promotions in his sixteen-year reign. Bruno Ribeiro, from Portugal, became the first manager born outside of Britain to manage the club when he was appointed as manager in June 2016.

Example Output: a

Example Input: Question: Who was the manager for the England U-18 football team when Demarai Gray was called up for training camp? Passage:Gray was called up for an England under-18s training camp in November 2013. He made his debut at that level on 18 February 2014, playing the whole of a 4–0 win against their Belgian counterparts in a friendly match at St George's Park. Two weeks later, he was involved in England's goal as they lost 2–1 to Croatia in the first match of a double-header. He received his first call-up to the under-19s for a friendly against Germany in September 2014, and made his debut as a second-half substitute. An ankle injury forced Gray's withdrawal from the squad for the 2015 European Under-19 Championship first qualifying round, but he was able to play his part in the elite round. He started the first match, against Denmark, and was involved in England's second goal in a 3–2 win, when his near-post flick was deflected over the line by a Danish player. The Football Association (the FA) credit Gray with the goal, although UEFA record it as an own goal. A substitute in the second group match, a win against Azerbaijan, he returned to the starting eleven for the final group match against France, but a 2–1 defeat meant England failed to qualify for the finals.

Example Output:
b