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.

Input: Consider Input: Question: Was Nathan Sivin alive when Han Zhenhua claimed that Nanhai referred to the Scarborough Shoal? Passage:The People's Republic of China and the Republic of China (Taiwan) claim that Chinese people discovered the shoal centuries ago and that there is a long history of Chinese fishing activity in the area. The shoal lies within the nine-dotted line drawn by China on maps marking its claim to islands and relevant waters consistent with United Nations Convention on the Law of the Sea (UNCLOS) within the South China Sea. An article published in May 2012 in the PLA Daily" states that Chinese astronomer Guo Shoujing went to the island in 1279, under the Yuan dynasty, as part of an empire-wide survey called "Measurement of the Four Seas" (四海测验), however, no such 13th century map has been made public by China nor such evidence on the existence of the map is known. In 1979 historical geographer Han Zhenhua (韩振华) was among the first scholars to claim that the point called "Nanhai" (literally, "South Sea") in that astronomical survey referred to Scarborough Shoal. In 1980 during a conflict with Vietnam for sovereignty over the Paracel Islands (Xisha Islands), however, the Chinese government issued an official document claiming that "Nanhai" in the 1279 survey was located in the Paracels. Historical geographer Niu Zhongxun defended this view in several articles. In 1990, a historian called Zeng Zhaoxuan (曾昭璇) argued instead that the Nanhai measuring point was located in Central Vietnam. Historian of astronomy Chen Meidong (陈美东) and historian of Chinese science Nathan Sivin have since agreed with Zeng's position in their respective books about Guo Shoujing.


Output: b


Input: Consider Input: Question: Did Brett or Mayberry start playing professional baseball first? Passage:At Kauffman Stadium, Dennis Leonard pitched a four-hit complete game to give the Royals a 2–1 series lead. After a one-out walk and single, Freddie Patek's RBI single off of Mike Torrez in the second put the Royas up 1–0. Next inning, Al Cowens's groundout with runners on second and third and no outs made it 2–0 Royals. The Yankees got on the board in the fifth when Graig Nettles singled with two outs and scored on Lou Pinella's double, but the Royals got that run back in the bottom of the inning when Hal McRae hit a leadoff double, moved to third on a groundout, and scored on Cowens's groundout. Next inning, Torrez allowed a leadoff walk and single, then got two outs before being relieved by Sparky Lyle, who allowed a two-run double to Amos Otis. Next inning, George Brett hit a leadoff single and scored on John Mayberry's RBI double. The Yankees got a run in the ninth when Roy White doubled with one out and scored on first baseman Mayberry's error on Reggie Jackson's ground ball before Chris Chambliss grounded out to end the game.


Output: a


Input: Consider Input: Question: Did Harvard have a larger endowment than Syracuse the year Bliss co-signed his letter protesting McCarthy's attacks of the Foreign Service? Passage:Robert Bliss was involved with many cultural and civic organizations. He served as honorary president and trustee of the American Federation of Arts; president of the American Foreign Service Association; vice-chairman of the Smithsonian Art Commission; vice-chairman of the board of the National Trust for Historic Preservation; director and first vice-president of the Washington Criminal Justice Association; member of the American Academy of Political and Social Science; and member of the Harvard Board of Overseers. He was trustee of the American Museum of Natural History, New York; trustee and executive committee member of the Carnegie Institution, Washington, D.C.; trustee of Nelson Rockefeller's Museum of Primitive Art, New York; trustee of the Santa Barbara Museum of Art; and member of the Advisory Committee on Art of the State Department's Division of Cultural Relations and the Office of the Coordinator of Inter-American Affairs. He received honorary Doctor of Law degrees from the University of Missouri (1933); Syracuse University (1934); and Harvard University (1951). Robert Bliss was one of five retired diplomats who co-signed a 1954 letter protesting U.S. Senator Joseph McCarthy's attacks on the Foreign Service.



Output: a