Question: what kind of rock is uluru made from
[{'answer': 'sandstone', 'provenance': [{'wikipedia_id': '133260', 'title': 'Uluru', 'start_paragraph_id': 1, 'start_character': 125, 'end_paragraph_id': 1, 'end_character': 134, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '133260', 'title': 'Uluru', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 278, 'bleu_score': 0.568126420352158, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1298015996011512049}, 'section': 'Section::::Abstract.'}]}]