What pivotal naval battle of World War II occurred six months after the Japanese attack on Pearl Harbor?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q30', 'id': 0, 'label': 'United States of America'}, {'type': 'INTERNAL', 'name_': 'Q145', 'id': 1, 'label': 'United Kingdom'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q17', 'id': 2, 'label': 'Japan'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q362', 'id': 3, 'label': 'World War II'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q52418', 'id': 4, 'label': 'Attack on Pearl Harbor'}, {'type': 'INTERNAL', 'name_': 'Q796269', 'id': 5, 'label': 'BL 10 inch Mk I – IV gun'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q26979622', 'id': 6, 'label': 'NavWeaps'}, {'type': 'INTERNAL', 'name_': 'Q1002203', 'id': 7, 'label': '16 inch/50 Mark 7 gun'}], 'links': [{'name_': 'P17', 'source': 0, 'target': 0, 'label': 'country'}, {'name_': 'P530', 'source': 0, 'target': 1, 'label': 'diplomatic relation'}, {'name_': 'P530', 'source': 0, 'target': 2, 'label': 'diplomatic relation'}, {'name_': 'P793', 'source': 0, 'target': 3, 'label': 'significant event'}, {'name_': 'P793', 'source': 0, 'target': 4, 'label': 'significant event'}, {'name_': 'P530', 'source': 1, 'target': 0, 'label': 'diplomatic relation'}, {'name_': 'P17', 'source': 1, 'target': 1, 'label': 'country'}, {'name_': 'P530', 'source': 1, 'target': 2, 'label': 'diplomatic relation'}, {'name_': 'P527', 'source': 3, 'target': 4, 'label': 'has part(s)'}, {'name_': 'P495', 'source': 5, 'target': 1, 'label': 'country of origin'}, {'name_': 'P1343', 'source': 5, 'target': 6, 'label': 'described by source'}, {'name_': 'P495', 'source': 7, 'target': 0, 'label': 'country of origin'}, {'name_': 'P607', 'source': 7, 'target': 3, 'label': 'conflict'}, {'name_': 'P1343', 'source': 7, 'target': 6, 'label': 'described by source'}]}