Question: how many gallons of water in the gulf of mexico
[{'answer': '660 quadrillion US gallons', 'provenance': [{'wikipedia_id': '21076367', 'title': 'Gulf of Mexico', 'start_paragraph_id': 2, 'start_character': 773, 'end_paragraph_id': 2, 'end_character': 799, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '2,500 quadrillion liters ( 550 quadrillion Imperial gallons , 660 quadrillion US gallons , 2.5 million km or 600,000 cu mi )'}, {'provenance': [{'wikipedia_id': '21076367', 'title': 'Gulf of Mexico', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 832, 'bleu_score': 0.916688558507834, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 577146003887548331}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '21076367', 'title': 'Gulf of Mexico', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['The basin contains a volume of roughly 2,500 quadrillion liters (550 quadrillion Imperial gallons, 660 quadrillion US gallons, 2.5 million km or 600,000 cu mi).', "The Gulf of Mexico formed approximately 300 million years ago as a result of plate tectonics. The Gulf of Mexico basin is roughly oval and is approximately wide and floored by sedimentary rocks and recent sediments. It is connected to part of the Atlantic Ocean through the Florida Straits between the U.S. and Cuba, and with the Caribbean Sea (with which it forms the American Mediterranean Sea) via the Yucatán Channel between Mexico and Cuba. With the narrow connection to the Atlantic, the Gulf experiences very small tidal ranges. The size of the Gulf basin is approximately 1.6 million km (615,000\xa0sq\xa0mi). Almost half of the basin is shallow continental shelf waters. The basin contains a volume of roughly 2,500 quadrillion liters (550 quadrillion Imperial gallons, 660 quadrillion US gallons, 2.5 million km or 600,000 cu mi). The Gulf of Mexico is one of the most important offshore petroleum production regions in the world, comprising one-sixth of the United States' total production.", "The size of the Gulf basin is approximately 1.6 million km (615,000\xa0sq\xa0mi). Almost half of the basin is shallow continental shelf waters. The basin contains a volume of roughly 2,500 quadrillion liters (550 quadrillion Imperial gallons, 660 quadrillion US gallons, 2.5 million km or 600,000 cu mi). The Gulf of Mexico is one of the most important offshore petroleum production regions in the world, comprising one-sixth of the United States' total production."]}}]}]