Which country is closer to Canada, U.S. or Mexico?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q30', 'id': 0, 'label': 'United States of America'}, {'type': 'INTERNAL', 'name_': 'Q1860', 'id': 1, 'label': 'English'}, {'type': 'INTERNAL', 'name_': 'Q602358', 'id': 2, 'label': 'Brockhaus and Efron Encyclopedic Dictionary'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q16', 'id': 3, 'label': 'Canada'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q96', 'id': 4, 'label': 'Mexico'}, {'type': 'INTERNAL', 'name_': 'Q82681', 'id': 5, 'label': 'Tlaxcala'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q6047309', 'id': 6, 'label': 'Central Nahuatl'}, {'type': 'INTERNAL', 'name_': 'Q3056151', 'id': 7, 'label': 'Manuel Rodríguez Villegas'}], 'links': [{'name_': 'P17', 'source': 0, 'target': 0, 'label': 'country'}, {'name_': 'P37', 'source': 0, 'target': 1, 'label': 'official language'}, {'name_': 'P1343', 'source': 0, 'target': 2, 'label': 'described by source'}, {'name_': 'P530', 'source': 0, 'target': 3, 'label': 'diplomatic relation'}, {'name_': 'P530', 'source': 0, 'target': 4, 'label': 'diplomatic relation'}, {'name_': 'P17', 'source': 1, 'target': 0, 'label': 'country'}, {'name_': 'P17', 'source': 1, 'target': 3, 'label': 'country'}, {'name_': 'P1343', 'source': 5, 'target': 2, 'label': 'described by source'}, {'name_': 'P17', 'source': 5, 'target': 4, 'label': 'country'}, {'name_': 'P2936', 'source': 5, 'target': 6, 'label': 'language used'}, {'name_': 'P1412', 'source': 7, 'target': 1, 'label': 'languages spoken, written or signed'}, {'name_': 'P27', 'source': 7, 'target': 4, 'label': 'country of citizenship'}, {'name_': 'P1412', 'source': 7, 'target': 6, 'label': 'languages spoken, written or signed'}]}