Question: when did canada gain their independence from britain
[{'answer': '1982', 'provenance': [{'wikipedia_id': '52477', 'title': 'History of Canada', 'start_paragraph_id': 3, 'start_character': 320, 'end_paragraph_id': 3, 'end_character': 324, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '52477', 'title': 'History of Canada', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 579, 'bleu_score': 0.9505764710553931, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4468522604642024180}, 'section': 'Section::::Abstract.'}]}]