In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it, i.e., the proper nouns in the passage. Your job is to determine whether information from more than one term is needed to answer the question. Indicate your choice as 'a' for Yes or 'b' for No.

Ex Input:
Question: Which of the construction materials that St Nicholas was constructed with has a higher value on the Mohs scale? Passage:St Nicholas is constructed in flint, with some conglomerate and brick, and has limestone dressings. The roofs are tiled. Its plan consists of a nave, a chancel with a north vestry (previously a porch), and a west tower. The tower is wholly octagonal. In each face of the upper stage of the tower is a lancet, and there is another lancet on the west side at a lower level. The parapet is battlemented. The tower has a west doorway in Norman style, which has possibly been re-set from elsewhere in the church. It has scalloped capitals, and zig-zag decoration on the arch. Inside the upper part of the tower is a 17th-century dovecote lined with brick nesting boxes. On the south side, between the tower and the nave, is a brick stair turret. The nave windows have two lights with Decorated tracery. Between the windows on the south side is another Norman doorway, again with zig-zag decoration. The north and south walls of the chancel have two-light windows with Y-tracery, and three-light windows with Perpendicular tracery. The east window has five lights. The east gable is decorated with grotesque carvings, and above the east window is head-corbel and a blocked niche. The vestry has two-light north and south windows. In the north wall of the nave is an Early English doorway, with dog-tooth ornament. Around the church are stepped buttresses.

Ex Output:
a

Ex Input:
Question: How many different teams did the player Lakin replaced at in the 201718 FA Cup play for? Passage:His involvement with Birmingham's first team increased, and on 27 January 2018, he was given a squad number and included among the substitutes for the FA Cup fourth-round visit to Premier League club Huddersfield Town. He remained unused as Birmingham drew the match, but made his senior debut in the replay ten days later. Use of a fourth substitute during extra time of an FA Cup tie, trialled in the later rounds of the 201617 edition, was permitted from the first round in 201718. Lakin became the first Birmingham player to be used under that arrangement when he replaced Jason Lowe after 101 minutes with his team already 31 down; the match finished as a 41 defeat. According to the Birmingham Mail, on his first involvement in the match, "he gathered possession on the edge of his own area, surged through his half and threaded a superb pass to Jota which set Blues away on the counter", showing the "sort of technical ability which has made him such a big hit in his first full season at Under 23 level." Two weeks later, Lakin signed a new contract to run until 2020, with a further one-year option in the club's favour.

Ex Output:
b

Ex Input:
Question: How many NCAA tournament titles has the coach for the only college basketball team to have ever had its national title vacated won? Passage:The first NCAA Tournament was organized by the National Association of Basketball Coaches. Oregon won the inaugural tournament, defeating Ohio State 4633 in the first championship game. Before the 1941 tournament, control of the event was given to the NCAA. In the early years of the tournament, it was considered less important than the National Invitation Tournament (NIT), a New York City-based event. Teams were able to compete in both events in the same year, and three of those that did soUtah in 1944, Kentucky in 1949, and City College of New York (CCNY) in 1950won the NCAA Tournament. The 194950 CCNY team won both tournaments (defeating Bradley in both finals), and is the only college basketball team to accomplish this feat. By the mid-1950s, the NCAA Tournament became the more prestigious of the two events, and in 1971 the NCAA barred universities from playing in other tournaments, such as the NIT, if they were invited to the NCAA Tournament. The 2013 championship won by Louisville was the first men's basketball national title to ever be vacated by the NCAA after the school and its coach at the time, Rick Pitino, were implicated in a 2015 sex scandal involving recruits.

Ex Output:
b