Question: when did the black death start in europe
[{'answer': '1347', 'provenance': [{'wikipedia_id': '4501', 'title': 'Black Death', 'start_paragraph_id': 1, 'start_character': 243, 'end_paragraph_id': 1, 'end_character': 247, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4501', 'title': 'Black Death', 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 610, 'bleu_score': 0.8522297979743191, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13116578994757666792}, 'section': 'Section::::Chronology.:Origins of the disease.\n'}]}]