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: Of the first two post-doc positions John Ellis held, which company did he work for the longest? Passage:After completing his secondary education at Highgate School, he attended King's College, Cambridge, earning his PhD in theoretical (high-energy) particle physics in 1971. After brief post-doc positions at SLAC and Caltech, he went to CERN and has held an indefinite contract there since 1978. He was awarded the Maxwell Medal and the Paul Dirac Prize by the Institute of Physics in 1982 and 2005 respectively, and is an Elected Fellow of the Royal Society of London since 1985 and of the Institute of Physics since 1991. He was awarded an Honorary Doctorate from the University of Southampton, and twice won the First Award in the Gravity Research Foundation essay competition (in 1999 and 2005). He is also Honorary Doctor at Uppsala University.


Ex Output:
a


Ex Input:
Question: Which of the cities in the Upper Peninsula of Michigan where a very large snowbelt exists has the largest population? Passage:A very large snowbelt in the United States exists on the Upper Peninsula of Michigan, near the cities of Houghton, Marquette, and Munising. These areas average of snow each season. For comparison, on the western shore, Duluth, Minnesota receives per season. Lake Superior and Lake Huron rarely freeze because of their size and depth; hence, lake-effect snow can fall continually in the Upper Peninsula and Canadian snowbelts during the winter months. Main areas of the Upper Peninsula snow belt include the Keweenaw Peninsula and Baraga, Marquette and Alger counties, where Lake Superior contributes to lake-effect snow, making them a prominent part of the Midwestern snow belt. Records of of snow or more have been set in many communities in this area. The Keweenaw Peninsula averages more snowfall than almost anywhere in the United States—more than anywhere east of the Mississippi River and the most of all non-mountainous regions of the continental United States. Because of the howling storms across Lake Superior, which cause dramatic amounts of precipitation, it has been said that the lake-effect snow makes the Keweenaw Peninsula the snowiest place east of the Rockies. Only one official weather station exists in this region. Located in Hancock, Michigan, this station averages well over per year. Farther north in the peninsula, lake-effect snow can occur with any wind direction. The road commission in Keweenaw County, Michigan collects unofficial data in a community called Delaware, and it strictly follows the guidelines set forth by the National Weather Service. This station averages over per season. Even farther north, a ski resort called Mount Bohemia receives an unofficial annual average of . Herman, Michigan, averages of snow every year. Lake-effect snow can cause blinding whiteouts in just minutes, and some storms can last days.


Ex Output:
b


Ex Input:
Question: Which of his pre-World War Two dance partners was the oldest? Passage:In the early 1940s, he met Pearl Primus at the National Youth Administration and became her first dance partner before studying dance with Syvilla Fort and Katherine Dunham. After serving in World War II, he returned to New York in 1946 first performing on Broadway in Show Boat, and in London in Finian’s Rainbow. Later, Nash became a member of Donald McKayle’s company, another African American choreographer of New York. He became a regular in Broadway originals, performing in My Darlin' Aida, Flahooley, and Bless You All. He also danced with Alvin Ailey in 1954 when he danced in House of Flowers, choreographed by Pearl Bailey. Starting in 1948, Joseph Nash became a dance instructor at Marion Cuyjet’s Judimar School of Dance in Philadelphia. His classes became famous in the city dance scene. One of his most talented students, Judith Jamison, became a world-famous dancer, becoming the artistic director of the Alvin Ailey American Dance Theater. Arthur Hall, a dancer and archivist, was also one of his students.


Ex Output:

b