Question: the most stable mineral at the earth's surface
[{'answer': 'quartz', 'provenance': [{'wikipedia_id': '27772', 'title': 'Sandstone', 'start_paragraph_id': 2, 'start_character': 30, 'end_paragraph_id': 2, 'end_character': 36, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'feldspar', 'provenance': [{'wikipedia_id': '27772', 'title': 'Sandstone', 'start_paragraph_id': 2, 'start_character': 40, 'end_paragraph_id': 2, 'end_character': 48, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '27772', 'title': 'Sandstone', 'start_paragraph_id': 54, 'start_character': 0, 'end_paragraph_id': 54, 'end_character': 722, 'bleu_score': 0.9559054761834711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1980267021156621845}, 'section': "Section::::Types of sandstone.:Dott's classification scheme.\n"}]}, {'provenance': [{'wikipedia_id': '27772', 'title': 'Sandstone', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1980267021156621845}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '27772', 'title': 'Sandstone', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 533, 'bleu_score': 0.9572799132941561, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1980267021156621845}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '27772', 'title': 'Sandstone', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ["Most sandstone is composed of quartz or feldspar (both silicates) because they are the most resistant minerals to weathering processes at the Earth's surface, as seen in Bowen's reaction series.", "Most sandstone is composed of quartz or feldspar (both silicates) because they are the most resistant minerals to weathering processes at the Earth's surface, as seen in Bowen's reaction series.", "Most sandstone is composed of quartz or feldspar (both silicates) because they are the most resistant minerals to weathering processes at the Earth's surface, as seen in Bowen's reaction series."]}}]}]