query: How large is Alberta, Canada?
passage: Alberta
Alberta (/ælˈbɜːrtə/(listen)) is a western province of Canada. With an estimated population of 4,067,175 as of 2016 census,[1] it is Canada's fourth most populous province and the most populous of Canada's three prairie provinces. Its area is about 660,000 square kilometres (250,000sqmi). Alberta and its neighbour Saskatchewan were districts of the Northwest Territories until they were established as provinces on September 1, 1905.[5] The premier has been Rachel Notley since May 2015.
passage: Alberta
About 290km (180mi) south of the capital is Calgary, the largest city in Alberta. Calgary and Edmonton centre Alberta's two census metropolitan areas, both of which have populations exceeding one million,[8] while the province has 16 census agglomerations.[9]