Question: when was coal first mined in the uk
[{'answer': 'Durham', 'provenance': [{'wikipedia_id': '28563659', 'title': 'Coal mining in the United Kingdom', 'start_paragraph_id': 1, 'start_character': 173, 'end_paragraph_id': 1, 'end_character': 179, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Northumberland', 'provenance': [{'wikipedia_id': '28563659', 'title': 'Coal mining in the United Kingdom', 'start_paragraph_id': 1, 'start_character': 154, 'end_paragraph_id': 1, 'end_character': 168, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '28563659', 'title': 'Coal mining in the United Kingdom', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 693, 'bleu_score': 0.9829771687435411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5291198745019525274}, 'section': 'Section::::History.\n'}]}]