Question: when did the northwest mounted police become the rcmp
[{'answer': '1920', 'provenance': [{'wikipedia_id': '69080', 'title': 'Royal Canadian Mounted Police', 'start_paragraph_id': 3, 'start_character': 55, 'end_paragraph_id': 3, 'end_character': 59, 'bleu_score': 1.0, 'section': 'Section::::Overview.\n'}]}, {'provenance': [{'wikipedia_id': '69080', 'title': 'Royal Canadian Mounted Police', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 575, 'bleu_score': 0.9536330554540541, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5873272487335911675}, 'section': 'Section::::Overview.\n'}]}]