Question: when did the vikings first come to england
[{'answer': '1066', 'provenance': [{'wikipedia_id': '31581503', 'title': 'Norse activity in the British Isles', 'start_paragraph_id': 42, 'start_character': 24, 'end_paragraph_id': 42, 'end_character': 28, 'bleu_score': 1.0, 'section': 'Section::::Second invasion: 980–1012.:England.\n'}]}, {'provenance': [{'wikipedia_id': '31581503', 'title': 'Norse activity in the British Isles', 'start_paragraph_id': 44, 'start_character': 0, 'end_paragraph_id': 44, 'end_character': 401, 'bleu_score': 0.9168060593278891, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13544701931789062282}, 'section': 'Section::::Invasions of 1066.\n'}]}]