Given the task definition, example input & output, solve the new input case.
In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
Example: Passage: Nearing London, Oliver encounters Jack Dawkins, a pickpocket more commonly known by the nickname the "Artful Dodger", and his sidekick, a boy of a humorous nature named Charley Bates, but Oliver's innocent and trusting nature fails to see any dishonesty in their actions. The Dodger provides Oliver with a free meal and tells him of a gentleman in London who will "give him lodgings for nothing, and never ask for change". Grateful for the unexpected assistance, Oliver follows the Dodger to the "old gentleman's" residence. In this way Oliver unwittingly falls in with an infamous Jewish criminal known as Fagin, the gentleman of whom the Artful Dodger spoke. Ensnared, Oliver lives with Fagin and his gang of juvenile pickpockets in their lair at Saffron Hill for some time, unaware of their criminal occupations. He believes they make wallets and handkerchiefs.
Output: Who believes Fagin's gang make wallets and handkerchiefs?.
This question is based on the following sentence in the passage "He believes they make wallets and handkerchiefs". It evaluates the understanding that the pronoun "he" refers to name "Oliver". You can ask questions like this one about most pronouns in a paragraph.

New input case for you: Passage: By 1911, Winnipeg was the third largest city in Canada, and remained so until overtaken by Vancouver in the 1920s. A boomtown, it grew quickly around the start of the 20th century, with outside investors and immigrants contributing to its success. The drop in growth in the second half of the decade was a result of the opening of the Panama Canal in 1914, which reduced reliance on transcontinental railways for trade, as well as a decrease in immigration due to the outbreak of the First World War. Over 18,000 Manitoba residents enlisted in the first year of the war; by the end of the war, 14 Manitobans had received the Victoria Cross.After the First World War ended, severe discontent among farmers (over wheat prices) and union members (over wage rates) resulted in an upsurge of radicalism, coupled with a polarization over the rise of Bolshevism in Russia. The most dramatic result was the Winnipeg general strike of 1919. It began on 15 May and collapsed on 25 June 1919; as the workers gradually returned to their jobs, the Central Strike Committee decided to end the movement.Government efforts to violently crush the strike, including a Royal Northwest Mounted Police charge into a crowd of protesters that resulted in multiple casualties and one death, had led to the arrest of the movement's leaders. In the aftermath, eight leaders went on trial, and most were convicted on charges of seditious conspiracy, illegal combinations, and seditious libel; four were aliens who were deported under the Canadian Immigration Act.The Great Depression (1929c. 1939) hit especially hard in Western Canada, including Manitoba. The collapse of the world market combined with a steep drop in agricultural production due to drought led to economic diversification, moving away from a reliance on wheat production. The Manitoba Co-operative Commonwealth Federation, forerunner to the New Democratic Party of Manitoba (NDP), was founded in 1932.Canada entered the Second World War in 1939. Winnipeg was one of the major commands for the British Commonwealth Air Training Plan to train fighter pilots, and there were air training schools throughout Manitoba. Several Manitoba-based regiments were deployed overseas, including Princess Patricia's Canadian Light Infantry. In an effort to raise money for the war effort, the Victory Loan campaign organized "If Day" in 1942. The event featured a simulated Nazi invasion and occupation of Manitoba, and eventually raised over C$65 million.
Output:
What city was considered a boomtown?