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: How many years did the war where Lyon served with the 2nd Battalion last? Passage:Lyon was commissioned as a Second Lieutenant into the 4th (Extra Reserve) Battalion, the North Staffordshire Regiment in February 1900, but two months later, in April of the same year, transferred to the 2nd Battalion of the regiment. The 2nd Battalion was a regular battalion and was at the time on active service in South Africa during the Second Boer War, where Lyon joined the battalion and served with it throughout the war being Mentioned in Despatches in 1901. He was promoted to lieutenant on 19 January 1901, while in South Africa. After peace was declared in May 1902, Lyon left Cape Town on board the SS Bavarian and arrived in the United Kingdom the following month. He remained with the 2nd Battalion when it was posted to India in 1903 where he became adjutant and was promoted to captain.


Ex Output:
b


Ex Input:
Question: When was the University that Anne Larigauderie got her Master's Degree in plant molecular biology founded? Passage:Anne Larigauderie received her Master's Degree in plant molecular biology from the Université Paul Sabatier, Toulouse, France, and her PhD in plant ecology, from the Université des Sciences et Techniques du Languedoc and the French National Centre for Scientific Research (CNRS) in Montpellier, France. She then spent several years in the USA, working as a research scientist in several scientific projects. In Alaska, for example, she was involved in the first pilot project performing CO2 enrichment of natural ecosystems in the tundra in open top chambers (with Prof. Walter C. Oechel) to understand and predict impact of climate change on plant physiology and ecology. In California (San Diego State University and the University of California – Davis) she worked on root competition among California grassland species for soil nutrient pockets (with Prof. Jim Richards). A subsequent project focused on responses of various grass species to various scenarios of elevated CO2 and temperature, the aim of which was to predict response of grasses to future climate change (with Prof. Boyd Strain and Prof. Jim Reynolds, Duke University, North Carolina).


Ex Output:
b


Ex Input:
Question: How long had the Kennedy Center been standing by the year Liao made his debut at the Washington National Opera? Passage:In 2000 Liao made his debut at the Washington National Opera as the Count di Luna in Verdi's Il trovatore at the Kennedy Center with Plácido Domingo conducting. In 2001 he portrayed Enzo in Attila with the Opera Orchestra of New York (OONY) at Carnegie Hall, and was heard again with that ensemble the following year as Captain Israele in Gaetano Donizetti's Marino Faliero. In 2002 he sang the role of Méphistophélès in Berlioz's La damnation de Faust with the China Philharmonic Orchestra. In 2003 he made his debut at the Dutch National Opera as the Japanese Prince in Tan Dun's . That same year he made his debut with the Michigan Opera Theater as the Count di Luna, and was also seen with that company as Renato in Un ballo in maschera. In 2004 he sang the role of Pasha Seid in Verdi's Il corsaro with the OONY under Eve Queler at Carnegie Hall.


Ex Output:

b