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.

Question: What was the population of Dunmurry the year Barbour died there? Passage:Barbour married Elise Barbour, a distant relative (b. Paterson, New Jersey, USA in 1873); Lady Barbour died at their home, Conway House, Dunmurry, in 1910. The couple had three daughters and one son, John Milne Jnr., whose aeroplane went missing whilst flying over the Irish sea in 1937. John was a civilian pilot (a former competitor in the King's Cup Race) who would fly home at the weekends from the Barbour factory in Glasgow, where he worked during the week. Barbour's sister, Helen, married Thomas Andrews, architect of the Titanic. Barbour was a Freemason. He was described by diarist Lillian Dean, later Lady Spender (wife of Sir Wilfrid Spender) as "a curious man who looks like a stage Mephistopheles but is given to preaching in dissenting chapels." A deeply religious man throughout his life he served on as a Member of the General Synod of the Church of Ireland. presented the East Window to Christ Church Cathedral, Lisburn, in memory of his wife and son. The baronetcy became extinct upon his death, Barbour was predeceased by his son.
b