Question: who discovered the process of coral reef development
[{'answer': 'Charles Darwin', 'provenance': [{'wikipedia_id': '87410', 'title': 'Coral reef', 'start_paragraph_id': 7, 'start_character': 52, 'end_paragraph_id': 7, 'end_character': 66, 'bleu_score': 1.0, 'section': 'Section::::Formation.\n'}]}, {'provenance': [{'wikipedia_id': '87410', 'title': 'Coral reef', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 528, 'bleu_score': 0.7892659953386271, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12527899220958475004}, 'section': 'Section::::Formation.\n'}]}]