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: What is the population of the city where the port the Sibiryakov reached after 65 days is located? Passage:A. Sibiryakov sailed on 28 June 1932 from the Krasny (previously Sobornoy) docks in Arkhangelsk, crossed the Kara Sea and chose a northern, unexplored way around Severnaya Zemlya to the Laptev Sea. In September, after calling at Tiksi and the mouth of the Kolyma, the propeller shaft broke and the icebreaker drifted for 11 days. However, A. Sibiryakov crossed the Chukchi Sea using improvised sails and arrived in the Bering Strait in October. A. Sibiryakov reached the Japanese port of Yokohama after 65 days, having covered more than in the Arctic seas. This was regarded as a heroic feat of Soviet polar seamen and Chief of Expedition Otto Schmidt and Captain Vladimir Voronin were received with many honors at their return to Russia.

Example Output: b

Example Input: Question: Has the actor who was confirmed for a role in May of 2018 previously worked with the director of this film? Passage:On March 8, 2017, it was announced that 20th Century Fox had bought the spec script Bad Times at the El Royale, written by Drew Goddard, who would also direct and produce the film. On August 23, 2017, Chris Hemsworth and Jeff Bridges were cast in the 1960s-set film, to play two among the several characters who collide at the El Royale hotel, near California's Lake Tahoe. That same day, it was also reported that Tom Holland had passed on a role, and that Beyonce was being courted for the role of a Black vocalist. It was also revealed that main roles in the ensemble would include a vacuum cleaner salesman, two female criminals, a male cult leader, and a desk clerk. Later in August 2017, newcomer Cailee Spaeny was added to the cast to play an impressionable Southern girl brought to the hotel, while Cynthia Erivo was cast as the Black singer who finds herself in the wrong place at the wrong time. In January 2018, Dakota Johnson and Russell Crowe joined the cast (though Crowe did not appear in the film). In February 2018, Jon Hamm, Nick Offerman, and Mark O'Brien joined the cast, and in May 2018, Lewis Pullman was also confirmed for a role.

Example Output: a

Example Input: Question: How old was Moore when he was promoted to Lieutenant Colonel? Passage:The Battle of Ia Drang was the first major battle between the United States Army and the People's Army of Vietnam (PAVN), also referred to as the North Vietnamese Army (NVA), and was part of the Pleiku Campaign conducted early in the Vietnam War. It comprised two main engagements, centered on two previously scouted helicopter landing zones (LZs), known as LZ X-Ray and LZ Albany. The first involved the 1st Battalion, 7th Cavalry Regiment and supporting units under the command of Lieutenant Colonel Hal Moore, and took place November 1416, 1965 at LZ X-Ray, located at the eastern foot of the Chu Pong Massif in the central highlands of Vietnam. The second engagement involved the 2nd Battalion, 7th Cavalry Regiment plus supporting units under the command of Lieutenant Colonel Robert McDade, and took place on November 17 at LZ Albany, farther north in the Ia Drang Valley. It is notable for being the first large scale helicopter air assault and also the first use of Boeing B-52 Stratofortress strategic bombers in a tactical support role. Surrounded and under heavy fire from a numerically superior force, the American forces at LZ X-ray were able to hold off and drive back the North Vietnamese forces over three days of battle, largely through the support of both air power and heavy artillery bombardment, which the North Vietnamese lacked. LZ X-ray was considered an American tactical victory, as the Americans were able to exact an almost 10:1 kill ratio. At LZ Albany, the American forces were ambushed in close quarters. They were unable to use air and artillery support due to the close engagement of the North Vietnamese, the American forces were badly defeated, suffering an over-50% casualty rate before being extricated from the battle. Both sides, therefore, were able to claim victory in the battle.

Example Output:
b