Q: 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.
Passage: Transportation and warehousing contribute approximately C$2.2 billion to Manitoba's GDP. Total employment in the industry is estimated at 34,500, or around 5 percent of Manitoba's population. Trucks haul 95 percent of land freight in Manitoba, and trucking companies account for 80 percent of Manitoba's merchandise trade to the United States. Five of Canada's twenty-five largest employers in for-hire trucking are headquartered in Manitoba. C$1.18 billion of Manitoba's GDP comes directly or indirectly from trucking.Greyhound Canada and Grey Goose Bus Lines offer domestic bus service from the Winnipeg Bus Terminal. The terminal was relocated from downtown Winnipeg to the airport in 2009, and is a Greyhound hub. Municipalities also operate localized transit bus systems.
Manitoba has two Class I railways: Canadian National Railway (CN) and Canadian Pacific Railway (CPR). Winnipeg is centrally located on the main lines of both carriers, and both maintain large inter-modal terminals in the city. CN and CPR operate a combined 2,439 kilometres (1,516 mi) of track in Manitoba. Via Rail offers transcontinental and Northern Manitoba passenger service from Winnipeg's Union Station. Numerous small regional and short-line railways also run trains within Manitoba: the Hudson Bay Railway, the Southern Manitoba Railway, Burlington Northern Santa Fe Manitoba, Greater Winnipeg Water District Railway, and Central Manitoba Railway. Together, these smaller lines operate approximately 1,775 kilometres (1,103 mi) of track in the province.
A:
What was relocated from downtown Winnipeg to the airport?