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: What were the combined ages of Joseph Urban and Benjamin Wistar Morris the year that they were both hired to come up with blueprints for the house? Passage:The construction of Rockefeller Center occurred between 1932 and 1940 on land that John D. Rockefeller Jr. leased from Columbia University. The Rockefeller Center site was originally supposed to be occupied by a new opera house for the Metropolitan Opera. By 1928, Benjamin Wistar Morris and designer Joseph Urban were hired to come up with blueprints for the house. However, the new building was too expensive for the opera to fund by itself, and it needed an endowment, and the project ultimately gained the support of John D. Rockefeller Jr. The planned opera house was canceled in December 1929 due to various issues, with the new opera house eventually being built at Lincoln Center, opening in 1966.


Ex Output:
a


Ex Input:
Question: How old was William Havemeyer's son when he retired from the sugar refining business? Passage:William Havemeyer (1770-1851) left Germany at age 15 and arrived in New York City after learning the trade of sugar refining in London. In New York he managed a sugar house on Pine Street before opening his own refinery on Vandam Street with his brother, Frederick Christian Havemeyer, who had come to New York in 1802. Together the two brothers operated the W. & F.C. Havemeyer Company sugar refineries, before passing the business on to their sons. His son William Frederick Havemeyer, retired from the sugar refining business in 1842 and entered politics, eventually serving three terms as Mayor of New York. In 1855 the family relocated their refineries to Brooklyn, where they remained as the business grew to acquire a commanding share of the United States sugar refining market under the leadership of Frederick's grandson, Henry Osborne Havemeyer. The Havemeyer refineries were incorporated as the American Sugar Refining Company in 1891 and became known as Domino Sugar in 1900. In the 20th century several of the family's members made notable contributions to the arts. Henry Osborne Havemeyer and his wife Louisine Havemeyer made large bequests to the Metropolitan Museum of Art and their daughter Electra Havemeyer Webb founded the Shelburne Museum.


Ex Output:
b


Ex Input:
Question: How many years of age difference are there between the two candidates that Thompson lost to in 1948 and 1950? Passage:Thompson was a presidential elector for the 1948 presidential election. From 1949 to 1956, he was a member of the Democratic National Committee. In 1947, he was a candidate in for the United States House of Representatives from Wisconsin's 2nd congressional district in the special election following the death of Robert Kirkland Henry. He lost to Glenn Robert Davis. Thompson was twice an unsuccessful candidate for Governor of Wisconsin, losing to incumbent Oscar Rennebohm in 1948 and to Walter J. Kohler, Jr. in 1950, and was a delegate to the Democratic National Convention in 1952 and 1956. After serving as an alderman and city attorney in Stoughton, he was a member of the Assembly from 1953 until 1959, when he was elected to the Senate in a special election. He remained in the Senate until 1984.


Ex Output:

a