Which river is longer, the Mississippi or the Amazon?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q19180675', 'id': 0, 'label': 'Small Brockhaus and Efron Encyclopedic Dictionary'}, {'type': 'INTERNAL', 'name_': 'Q6581097', 'id': 1, 'label': 'male'}, {'type': 'INTERNAL', 'name_': 'Q5', 'id': 2, 'label': 'human'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q1497', 'id': 3, 'label': 'Mississippi River'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q3884', 'id': 4, 'label': 'Amazon.com'}, {'type': 'INTERNAL', 'name_': 'Q312556', 'id': 5, 'label': 'Jeff Bezos'}, {'type': 'INTERNAL', 'name_': 'Q109493027', 'id': 6, 'label': None}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q36697638', 'id': 7, 'label': 'Wendell Weeks'}], 'links': [{'name_': 'P1343', 'source': 2, 'target': 0, 'label': 'described by source'}, {'name_': 'P1343', 'source': 3, 'target': 0, 'label': 'described by source'}, {'name_': 'P21', 'source': 5, 'target': 1, 'label': 'sex or gender'}, {'name_': 'P31', 'source': 5, 'target': 2, 'label': 'instance of'}, {'name_': 'P108', 'source': 5, 'target': 4, 'label': 'employer'}, {'name_': 'P21', 'source': 6, 'target': 1, 'label': 'sex or gender'}, {'name_': 'P31', 'source': 6, 'target': 2, 'label': 'instance of'}, {'name_': 'P19', 'source': 6, 'target': 3, 'label': 'place of birth'}, {'name_': 'P21', 'source': 7, 'target': 1, 'label': 'sex or gender'}, {'name_': 'P31', 'source': 7, 'target': 2, 'label': 'instance of'}]}