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.

Example Input: Question: When was the institute that awarded Ellis the Maxwell Medal and the Paul Dirac Prize founded? 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.

Example Output: b

Example Input: Question: How many years did the Great Depression last? Passage:Originally from New Brunswick, Harrison graduated from Nova Scotia Agricultural College in 1922, and, in 1924, from the Ontario Agricultural College with a B.Sc. in agriculture. He earned an MSc in plant pathology from Macdonald Campus of McGill University a year later. A doctoral degree he started at the University of Toronto in 1929 was abandoned due to the Great Depression. He established a herbarium of mycological specimens where he was employed for many years at the Kentville Research Station (now the Atlantic Food and Horticulture Research Centre); most of his collections are now housed at the Canadian National Mycological Herbarium. His early research concerned the fungal infestation of plants, such as that of Colletotrichum lindemuthianum on beans (Phaseolus). Working with John Frederick DeWitt Hockey, they made many contributions to the control and prevention of diseases of horticultural crops. They were among the first to use the sticky slide spore trap to estimate the densities of fungal spores.

Example Output: b

Example Input: Question: Did Moscow have a greater population than Brussels the year Dodon took office? Passage:His first two international visits were to Moscow, and Brussels. Since he took office in December 2016 he has made 47 foreign visits to 19 different countries, with 20 of those visits being to Russia. In late October 2019, he visited Istanbul to attend the opening ceremony of Istanbul Airport as well as the ceremony for the Turkish Republic's 95th anniversary. In February and September 2019 respectively, he attended the Munich Security Conference in Germany and the Seventy-fourth session of the United Nations General Assembly in New York City both for the first time. During the UN visit, he referred to his attendance as "a successful one" during which he and his delegation "were able to promote the interests and aspirations of the Republic of Moldova on the international arena". He attended the 2018 FIFA World Cup opening ceremony in Moscow in June 2018 and the 2019 European Games in Minsk just over a year later. In October 2018, He attended a summit of the Organisation internationale de la Francophonie in Yerevan where he delivered a speech in the French language.

Example Output:
a