Question: how long prime minister stay in office canada
[{'answer': 'four years', 'provenance': [{'wikipedia_id': '24135', 'title': 'Prime Minister of Canada', 'start_paragraph_id': 13, 'start_character': 797, 'end_paragraph_id': 13, 'end_character': 807, 'bleu_score': 1.0, 'section': 'Section::::Term of office.\n'}]}, {'answer': 'until he or she resigns , is dismissed , or dies'}, {'answer': 'the post does not have a fixed term'}, {'provenance': [{'wikipedia_id': '24135', 'title': 'Prime Minister of Canada', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 927, 'bleu_score': 0.9505676220031131, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16413382850751679263}, 'section': 'Section::::Term of office.\n'}]}, {'provenance': [{'wikipedia_id': '24135', 'title': 'Prime Minister of Canada', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16413382850751679263}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '745773', 'title': 'Federal minority governments in Canada', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['At the federal level no minority government (excepting the odd case of the 14th) has lasted a standard four-year term', 'In a minority situation, governments must rely on the support of other parties to stay in power, providing less stability than a majority government. At the federal level no minority government (excepting the odd case of the 14th) has lasted a standard four-year term. Most minority governments have lasted less than two years. The average duration of completed minorities in Canada is 479 days or approximately 1 year, 140 days counting only that part of the 14th Parliament that was a minority, or 1 year, 207 days counting the entire duration of it.']}}]}, {'provenance': [{'wikipedia_id': '24135', 'title': 'Prime Minister of Canada', 'section': 'Section::::Term of office.\n', 'start_paragraph_id': 13, 'end_paragraph_id': 13, 'meta': {'evidence_span': ['the "Canada Elections Act"; the KingByng Affair was the only time since Confederation that the governor general deemed it necessary to refuse his prime minister\'s request for a general vote. As of 2007, with an amendment to the "Elections Act", Section 56.1(2) was changed to limit the term of a majority government to four years, with election day being set as the third Monday in October of the fourth calendar year after the previous polling date.', 'The Canadian prime minister serves at Her Majesty\'s pleasure, meaning the post does not have a fixed term. Once appointed and sworn in by the governor general, the prime minister remains in office until he or she resigns, is dismissed, or dies. The lifespan of parliament was limited by the constitution to five years, though the governor general may still, on the advice of the prime minister, dissolve parliament and issue the writs of election prior to the date mandated by the "Canada Elections Act"; the KingByng Affair was the only time since Confederation that the governor general deemed it necessary to refuse his prime minister\'s request for a general vote. As of 2007, with an amendment to the "Elections Act", Section 56.1(2) was changed to limit the term of a majority government to four years, with election day being set as the third Monday in October of the fourth calendar year after the previous polling date.', 'As of 2007, with an amendment to the "Elections Act", Section 56.1(2) was changed to limit the term of a majority government to four years, with election day being set as the third Monday in October of the fourth calendar year after the previous polling date.']}}]}]