Detailed Instructions: 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.
Problem:Question: How old was Pascal Bary the year that Zambezi Sun made his debut at Longchamp Racecourse? Passage:Trained by Pascal Bary, Zambezi Sun made his debut at the beginning of April 2007 at Longchamp Racecourse in Paris, winning the Prix Juigne, an event for unraced three-year-old colts and geldings. In his next start on April 29, he won the Prix de Nanterre at the Longchamp course and then on June 3 at Chantilly Racecourse he ran fourth to winner Lawman in the Group 1 Prix du Jockey Club. Back at Longchamp Racecourse, Zambezi Sun rebounded to win the prestigious G-1 Grand Prix de Paris. He did not race again until mid September when he ran third to Soldier of Fortune in the Prix Niel. In October he finished eighth in France's most prestigious race, the Prix de l'Arc de Triomphe. In contention during the final stretch run, eventual winner Dylan Thomas cut sharply in front of Zambezi Sun, but a claim of interference was rejected by the racing stewards.

Solution:
b