Question: any naturally occurring inorganic crystalline substance with a fairly definite chemical composition
[{'answer': 'mineral', 'provenance': [{'wikipedia_id': '19053', 'title': 'Mineral', 'start_paragraph_id': 1, 'start_character': 2, 'end_paragraph_id': 1, 'end_character': 9, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]