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: When did the operation during which the 704th dropped supplies to allied troops near Nijmegen begin? Passage: The group was occasionally diverted from strategic missions to carry out air support and interdiction missions. It supported Operation Overlord, the invasion of Normandy by attacking transportation targets, including bridges, along with airfields and strong points in France. On D Day, the squadron and the rest of the 446th Group led the first heavy bomber mission of the day. The 446th aided ground forces at Caen and Saint-Lo during July by hitting bridges, gun batteries, and enemy troops. During Operation Market Garden, the attempt to seize a bridgehead across the Rhine in the Netherlands, the 704th dropped supplies to allied troops near Nijmegen. It struck lines of communications during the Battle of the Bulge. During Operation Varsity in March 1945, it supplied ground and airborne troops near Wesel. The squadron flew its last combat mission on 25 April 1945 against Salzburg, Austria. The group had flown 273 missions and had lost 58 aircraft during the war,
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Example output: b
Example explanation: The passage describes the 704th's actions during Operation Market Garden so only information about the operation is needed.
Q: Question: What is the population of the city Ed Ou was attempting to travel to on October 1, 2016? Passage:On October 1, 2016, U.S. Customs and Border Protection officers detained and questioned Ou for more six hours in the Vancouver International Airport on his way to cover the Dakota Access Pipeline protests for the Canadian Broadcasting Corporation (CBC) as part of a project on Native American healthcare in North America. Ou's intended destination was Bismarck, North Dakota but, after passing through the initial security line at the airport, he was flagged by custom agents for secondary screening and pulled aside. They questioned his purpose for traveling to the United States and when he last visited Iraq, a routine experience for him as a journalist reporting in dangerous regions. He explained that he was on assignment as a photographer to cover the pipeline protests at Standing Rock for the CBC and that he had not been to Iraq in more than a year. He was then detained in a room where he was asked to provide details of his trips to every country he had visited in the last five years and all extremist groups he had come in contact with. Officials then requested that he unlock his three encrypted cell phones to search for images of him "posing with a dead body". After he refused to comply to protect his sources, they denied him entry into the United States, confiscated his phones and other materials, searched his checked baggage, and made photocopies of his reporter's notebook and personal diaries against his wishes. When his phones were returned to him, there was evidence of tampering with the SIM cards suggesting that copies of them may have been made. A border official later stated that his name matched a "person of interest" on an unspecified U.S. federal law enforcement watch list, however, no official reason was provided for his detention aside from it being "classified". Ou's travel rights into the United States have been revoked.

A:
b