Question: what rock is found 10 kilometers beneath the earth's surface
[{'answer': 'metamorphic', 'provenance': [{'wikipedia_id': '24712184', 'title': 'Igneous rock', 'start_paragraph_id': 1, 'start_character': 153, 'end_paragraph_id': 1, 'end_character': 164, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '24712184', 'title': 'Igneous rock', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 217, 'bleu_score': 0.8752376177722321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 636113269814469369}, 'section': 'Section::::Geological significance.\n'}]}]