Question: Botiller v. Dominguz was a decision by the United States Supreme Court that dealt with a region of the southwestern United States that was the third largest acquisition of territory in US history, with what being the largest?
{'answer': 'Louisiana Purchase', 'supporting_facts': [['Botiller v. Dominguez', 0], ['Mexican Cession', 0], ['Mexican Cession', 2], ['Mexican Cession', 3]]}