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: Which of the universities was founded first, the one Howells first obtained a degree from, or the one he studied at thereafter? Passage:Howells was born on 11 May 1871 in Cwm, Monmouthshire in south Wales. He was educated at schools in Cwm and Pengam before winning a scholarship to Regent's Park Baptist College, London. After graduating with a degree awarded by the University of London, he studied at the University of Oxford (at Mansfield College and Jesus College), at Christ's College, Cambridge and at the University of Tübingen, obtaining degrees from a total of four universities. He travelled to India in 1895 for the Baptist Missionary Society to deal with literary and educational work. In 1907, he became Principal of Serampore College, a post he held until 1932. During this time, he also served as a Fellow and examiner of the University of Calcutta (1913 to 1929) and was a member of the Bengal Legislative Council in 1918. After returning to Britain in 1932, he was lecturer in Hebrew at Rawdon Baptist College until 1935. He received honorary degrees from the University of St Andrews, Serampore College and the University of Wales. During his retirement, he moved to Castleton, south Wales and he died on 7 November 1935.

Example Output: a

Example Input: Question: How many total albums have the Swedish pop group ABBA released? Passage:The Definitive Collection is a 2001 compilation album of all the singles released by Swedish pop group ABBA. It consisted of two discs: the first featuring the singles from 1972–79 ("People Need Love" to "Does Your Mother Know"), and the second including the singles from 1979–82 ("Voulez-Vous" to "Under Attack"), with the tracks being listed in chronological order. The main exception is the track "Thank You for the Music", which, despite being written and recorded in 1977, was in fact released as a single (primarily in the UK) in 1983 after the band had split up. It appears on disc two, along with two bonus tracks, "Ring Ring" (1974 UK single remix), and "Voulez-Vous" (1979 US promo extended remix). The Australian version of The Definitive Collection adds a further two bonus tracks: "Rock Me" and "Hasta Mañana". The 1974 remix of "Ring Ring" is the first appearance on CD of this version mastered from the original master tape, after the UK single master tapes had been returned to Polar Music by the former UK licensees, Epic Records. The track's previous appearance on CD, in a 1999 singles boxed set, was mastered from a vinyl single.

Example Output: b

Example Input: Question: What was the combined ages of John Horne and Ben Peach the year that they wrote a paper that remains a classic text? Passage:Knockan Crag (, "crag of the small hill") lies within the North West Highlands Geopark in the Assynt region of Scotland north of Ullapool. During the nineteenth century Knockan Crag became the subject of much debate when geologists noted that the Moine schists at the top of the crag appeared to be older than the Cambrian and Ordovician rocks such as Durness limestone lower down. Disagreements over the processes that could have caused this to occur were referred to at the time as the 'Highlands Controversy'. The argument was primarily between Roderick Murchison and Archibald Geikie on the one hand and James Nicol and Charles Lapworth on the other. Murchison and Geikie believed the sequence was wrong and that the Moine schists must be the younger rocks. The controversy was finally resolved by the work of Ben Peach and John Horne whose 1907 paper on the subject remains a classic text. Peach and Horne demonstrated that the situation resulted from the action of a thrust fault - this being the first to be discovered anywhere in the world. The older rocks had been moved some 70 kilometres to the west over the top of the younger rocks due to tectonic action. 

Example Output:
a