Given the task definition and input, reply with output. 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 Roy Harrod's age when he opposed Mabane for the Labour seat? Passage:Mabane was elected Member of Parliament (MP) for Huddersfield in 1931 and lost his seat in 1945. Mabane's exact party label was confused for much of his time in the Commons. His local Liberal association was affiliated to the official Liberals until 1939, but Mabane was frequently listed as being a National Liberal, which he repeatedly sought to deny, despite supporting the National Government when the official Liberals had ceased to. He lost his seat to Labour in 1945, when he was opposed by an official Liberal candidate, Roy Harrod. The standard authoritative work by F.W.S. Craig indicates he was a National Liberal throughout his tenure, as does the contemporary Times Guide to the House of Commons. The town remained an area of strength for liberals and at the 1950 general election, the Liberal Donald Wade won Huddersfield West in a straight fight against Labour.
b