Please answer the following question: Information: - John George Diefenbaker (September 18, 1895 August 16, 1979) was the 13th Prime Minister of Canada, serving from June 21, 1957 to April 22, 1963. He was the only Progressive Conservative (PC or Tory) party leader between 1930 and 1979 to lead the party to an election victory, doing so three times, although only once with a majority of seats in the Canadian House of Commons. - A parliamentary system is a system of democratic governance of a state where the executive branch derives its democratic legitimacy from the legislature (parliament) and is also held accountable to that legislature. In a parliamentary system, the head of state is normally a different person from the head of government. This is in contrast to a presidential system in a democracy, where the head of state often is also the head of government, and most importantly, the executive branch does not derive its democratic legitimacy from the legislature. - The Canadian federal election of 1958 was the 24th general election in Canada 's history . It was held to elect members of the Canadian House of Commons of the 24th Parliament of Canada on March 31 , 1958 , just nine months after the 23rd election . It transformed Prime Minister John Diefenbaker 's minority into the then - largest majority government ( by percentage of seats ) in Canadian history and the second largest percentage of the popular vote . The turnout was 79.4 % . - A majority government is a government formed by a governing party that has an absolute majority of seats in the legislature or parliament in a parliamentary system. This is as opposed to a minority government, where the largest party in a legislature only has a plurality of seats. Given the paragraphs above, decide what entity has the relation 'office contested' with 'prime minister of canada'.
A:
canadian federal election