Question: what is a good solvent for vegetable oil
[{'answer': 'petroleum - derived hexane', 'provenance': [{'wikipedia_id': '192331', 'title': 'Vegetable oil', 'start_paragraph_id': 31, 'start_character': 215, 'end_paragraph_id': 31, 'end_character': 240, 'bleu_score': 1.0, 'section': 'Section::::Production.:Solvent extraction.\n'}]}, {'provenance': [{'wikipedia_id': '192331', 'title': 'Vegetable oil', 'start_paragraph_id': 31, 'start_character': 0, 'end_paragraph_id': 31, 'end_character': 333, 'bleu_score': 0.96188712955549, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18400402508607980045}, 'section': 'Section::::Production.:Solvent extraction.\n'}]}]