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.

Ex Input:
Question: Which team did Ferby lose to in the semi-finals of the 2001 Worlds? Passage:In 1999, Rycroft left the team to play with Ferbey's main rival, Kevin Martin. Rycroft was replaced by Marcel Rocque. The Ferbey Four that would dominate the Brier for the next few years was complete. Ferbey made his return to the Alberta provincials in 1999. While they didn't win, they did return in 2001 with a bang. They went on to winning not only the Alberta championship, but the 2001 Nokia Brier as well beating Kerry Burtnyk of Manitoba 84 in the final. This sent the team to the 2001 Worlds where they lost both their semi-final game and the bronze medal game, which they gave up to Pal Trulsen of Norway. In 2002, Ferbey won his fourth Brier, the 2002 Nokia Brier, which was his team's 2nd. They beat John Morris 94 in the final. This time, at the 2002 Worlds in Bismarck, North Dakota his team won the championship, beating the same Pal Trulsen, 105. Ferbey and his team would return to the Brier, at the 2003 Nokia Brier in Halifax, Nova Scotia. In the finals, they beat the home-town favourites Mark Dacey 84 in the finals. At the 2003 Ford World Curling Championship, his team won their 2nd world title, beating Ralph Stockli of Switzerland 106 in the finals. The 2004 Nokia Brier was a blip on his team's record. After returning to the Brier for the fourth straight year, an unprecedented feat especially considering the great number of good teams in Alberta, his team would bow out in the final. After a 101 round-robin record, Ferbey and his team lost out to the same team they beat the previous year, Mark Dacey of Nova Scotia, in a 109 game where Ferbey's team surrendered a lead. However, Team Ferbey did not give up, and their reign would not be over. In 2005, the once again won the Alberta championships, and once again won the 2005 Canadian championships. This set a record, as his team became the first to win 4 championships as a team. The final was against Nova Scotia again, albeit a different team, that of Shawn Adams. In another close game, team Ferbey pulled it out and won 54 in the final. His trip to the 2005 Men's Ford World Curling Championships were marked with struggles, as the team finished the round-robin with three losses tied for first with five other teams. After having a 43 record, Ferbey mounted eight straight wins to win the championship over David Murdoch of Scotland in a convincing 114 victory. Additionally, the Ferbey rink was the first team in history to score five on any single end in the world finals and they managed this feat twice at the 2005 Ford World Curling Championships.

Ex Output:
a

Ex Input:
Question: Who is the current president of the university where Senior was conferred with the honour of becoming a Doctor of the University? Passage:In 1980 Senior returned home from University in California, and went to work at the family's restaurant business taking an interest in the development of Scarborough's tourism industry, he co-founded a number of tourism groups including the South Bay Traders Association and Forum for Tourism. A keen mountain walker and climber Senior was an active member and Chairman of the Scarborough and Ryedale Mountain Rescue Team. In 2003 he was selected as a Prospective Parliamentary Candidate for the Conservative Party, a career path not yet pursued. Senior is credited with launching Free Bay one of the first free public Wifi zones in Britain and was cosignatory to Scarborough's urban renaissance programme the success of which helped win the town the title of most Enterprising Place in Europe 2010. Senior married his wife Nicola in 1984 at the Gibraltar Registry Office and they have a daughter Harriet, the family continue to operate their Scarborough based restaurant and property business sharing time between homes in North Yorkshire and Southern Spain, where Senior indulges his love of painting. In 2013 Senior was appointed to the post of Lifeboat Operations Manager, (LOM) RNLI at the Scarborough Station. The LOM is responsible for the smooth operation of the lifeboat station and crew. Her Majesty the Queen appointed Senior a Member of the Most Excellent Order of the British Empire MBE in the 2016 News Years Honours list. In July 2016 the Vice Chancellor of the University of Hull Professor Calie Pistorius conferred Senior with the honour of becoming a Doctor of the University (Honoris Causa). Earlier in 2016 Senior was invited to be a contributor to John Sentamu Archbishop of York's latest book, Agape Love Stories which was launched at St Michaels De BelfryChurch, York on 1 December 2016. The book contains a series of 22 contributions, including John Vavier and Richard Taylor father to Damilola Taylor the stories illustrate personal sacrifice and love in terms of there relationship to the Christian faith. Senior's contribution reflects on the ideal of being prepared to lay one's life down for one's friend, in the context of being a member of an RNLI Lifeboat crew. Senior uses the tragic Andrew McGeown incident of Feb 2015 to illustrate the bravery, courage and potential for personal sacrifice of all those involved .

Ex Output:
a

Ex Input:
Question: How many people live in the city that Nu Boyana Film is located in? Passage:Filmed in technicolor format, the music video for "Nobody's Perfect" was shot at Nu Boyana Film studios in Sofia, Bulgaria, on 24 March 2011 and was directed by Emil Nava. The music video premiered on 14 April 2011 in the United Kingdom through Jessie's Vevo channel. The music video is inspired by Lewis Carroll classic tale Alice's Adventures in Wonderland, Jessie J sits in a banquet table similar to the Mad Hatters' tea party. Jessie J is shown in a hall of doors that gives a resemblance to the curious hall in the first chapter of Alice in Wonderland. Jessie J also rolls in tar and appears dressed as the Roman goddess Libertas, who is better known as the robed female figure of the Statue of Liberty, what could be interpreted as Black-and-white dualism. After completing the filming sessions, Jessie J described the video as her favorite done so far.

Ex Output:
b