Question: when does canada switch to daylight savings time
[{'answer': 'the second Sunday of March', 'provenance': [{'wikipedia_id': '33464417', 'title': 'Daylight saving time in Canada', 'start_paragraph_id': 2, 'start_character': 63, 'end_paragraph_id': 2, 'end_character': 89, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '33464417', 'title': 'Daylight saving time in Canada', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 149, 'bleu_score': 0.9243880458347601, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8637288863294336471}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '33464417', 'title': 'Daylight saving time in 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': 8637288863294336471}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '33464417', 'title': 'Daylight saving time in Canada', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['it commences on the second Sunday of March', 'In regions where daylight saving time is used, it commences on the second Sunday of March,']}}]}, {'provenance': [{'wikipedia_id': '47548', 'title': 'Daylight saving time', 'section': 'Section::::Procedure.\n', 'start_paragraph_id': 20, 'end_paragraph_id': 20, 'meta': {'evidence_span': ['The dates on which clocks shift also vary with location and year; consequently, the time differences between regions also vary throughout the year. For example, Central European Time is usually six hours ahead of North American Eastern Time, except for a few weeks in March and October/November, while the United Kingdom and mainland Chile could be five hours apart during the northern summer, three hours during the southern summer, and four hours for a few weeks per year. Since 1996, European Summer Time has been observed from the last Sunday in March to the last Sunday in October; previously the rules were not uniform across the European Union. Starting in 2007, most of the United States and Canada observed DST from the second Sunday in March to the first Sunday in November, almost two-thirds of the year. Moreover, the beginning and ending dates are roughly reversed between the northern and southern hemispheres because spring and autumn are displaced six months. For example, mainland Chile observes DST from the second Saturday in October to the second Saturday in March, with transitions at local time. In some countries time is governed by regional jurisdictions within the country such that some jurisdictions shift and others do not; this is currently the case in Australia, Canada, Mexico, and the United States (formerly in Brazil, etc.).', 'Canada observed DST from the second Sunday in March', 'most of the United States and Canada observed DST from the second Sunday in March to the first Sunday in November']}}]}]