Question: what is the biggest coal mine in australia
[{'answer': 'Carmichael coal mine', 'provenance': [{'wikipedia_id': '43452224', 'title': 'Carmichael coal mine', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '43452224', 'title': 'Carmichael coal mine', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 305, 'bleu_score': 0.816619442274634, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3327933817929198615}, 'section': 'Section::::Abstract.'}]}]