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: 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: Which of the two congregations which provided leadership to the Pilgrims was founded first? Passage:The Pilgrims or Pilgrim Fathers were English settlers who established Plymouth Colony in Plymouth, Massachusetts. Their leadership came from the religious congregations of Brownists, or Separatist Puritans, who had fled religious persecution in England for the tolerance of 17th-century Holland in the Netherlands. They held Puritan Calvinist religious beliefs but, unlike most other Puritans, they maintained that their congregations should separate from the English state church. They eventually determined to establish a new settlement in the New World and arranged with investors to fund them. They established Plymouth Colony in 1620, which became the second successful English settlement in America, following the founding of Jamestown, Virginia in 1607. The Pilgrims' story became a central theme in the history and culture of the United States.

Example Output: a

Example Input: Question: What year did the Xtra Factor start? Passage:The X Factor is a British reality television music competition to find new singing talent. Created by Simon Cowell, the show began broadcasting on 4 September 2004 with 445 episodes broadcast over fifteen series as of 2 December 2018. The show is produced by Fremantle's Thames and Cowell's production company Syco Entertainment. It is broadcast on ITV in the UK and simulcast on Virgin Media One in Ireland. "X Factor" refers to the undefinable "something" that makes for star quality. The first three series were presented by Kate Thornton. Since series four, with the exception of series twelve (which was presented by Caroline Flack and Olly Murs), the show has been presented by Dermot O'Leary. The X Factor previously had a spin-off behind-the-scenes show called The Xtra Factor. This aired until 2016. It was replaced by an online spin-off show Xtra Bites exclusively on the ITV Hub. The main show was rested in 2019, with Cowell and ITV opting to broadcast and The X Factor: The Band as mini-series instead. At present, the programme is contracted to run until 2022.

Example Output:
b