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.

Input: Consider Input: Question: How much money is in the largest pension fund in Canada? Passage:Caisse de depot et placement du Quebec (CDPQ; lit. Quebec Deposit and Investment Fund, also referred to in English-language media as the Caisse) is an institutional investor that manages several public and parapublic pension plans and insurance programs in Quebec. It was founded in 1965 by an act of the National Assembly under the government of Jean Lesage. It is the second-largest pension fund in Canada, after the Canada Pension Plan (CPP). As at December 31, 2018, CDPQ managed assets of C$309.5 billion invested in Canada and elsewhere. CDPQ is headquartered in Quebec City in the Price building and has its main business office in Montreal at Edifice Jacques-Parizeau.

Output: b

Input: Consider Input: Question: Which of the actors playing Qatermass and Paterson was younger? Passage:Actor Jason Flemyng was cast as Quatermass, with long-time Kneale admirer Mark Gatiss as Paterson, Andrew Tiernan as Carroon, Indira Varma as his wife Judith, David Tennant as Briscoe, Adrian Bower as Fullalove and Adrian Dunbar as Lomaxnow a Ministry of Defence official rather than a policeman. Isla Blair was cast as Home Secretary Margaret Blaker, a combination of parts of Lomax's character and two officials from the original serial, and she brought to rehearsals a photograph of her husband Julian Glover on the set of the 1967 film version of Quatermass and the Pit. Blair stated that she was delighted to be joining "the Quatermass club".

Output: a

Input: Consider Input: Question: On average how large are the whales that were the first known organism to take advantage of the tubercle effect? Passage:The tubercle effect is a phenomenon where tubercles or large 'bumps' on the leading edge of an airfoil can improve its aerodynamics. The effect, while already discovered, was analyzed extensively by Frank E. Fish et al in the early 2000 onwards. The tubercle effect works by channeling flow over the airfoil into more narrow streams, creating higher velocities. Another side effect of these channels is the reduction of flow moving over the wingtip and resulting in less parasitic drag due to wingtip vortices. Using computational modeling, it was determined that the presence of tubercles produces a delay in the angle of attack until stall, thereby increasing maximum lift and decreasing drag. Fish first discovered this effect when looking at the fins of humpback whales. These whales are the only known organisms to take advantage of the tubercle effect. It is believed that this effect allows them to be much more maneuverable in the water, allowing for easier capture of prey. The tubercles on their fins allow them to do aquatic maneuvers to catch their prey.
Output: b