Question: when did canada get single payer health care
[{'answer': '2002', 'provenance': [{'wikipedia_id': '811741', 'title': 'Healthcare in Canada', 'start_paragraph_id': 22, 'start_character': 263, 'end_paragraph_id': 22, 'end_character': 267, 'bleu_score': 1.0, 'section': 'Section::::Economics.\n'}]}, {'provenance': [{'wikipedia_id': '811741', 'title': 'Healthcare in Canada', 'start_paragraph_id': 22, 'start_character': 0, 'end_paragraph_id': 22, 'end_character': 692, 'bleu_score': 0.9367837841888531, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2161973378456995428}, 'section': 'Section::::Economics.\n'}]}]