Question: when did manchester united get the nickname red devils
[{'answer': '1878', 'provenance': [{'wikipedia_id': '19961', 'title': 'Manchester United F.C.', 'start_paragraph_id': 1, 'start_character': 275, 'end_paragraph_id': 1, 'end_character': 279, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '19961', 'title': 'Manchester United F.C.', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 382, 'bleu_score': 0.8363830947610811, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14985329216754679969}, 'section': 'Section::::Abstract.'}]}]