Who played the character Rocky Balboa in the Rocky movies?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q723685', 'id': 0, 'label': 'video on demand'}, {'type': 'INTERNAL', 'name_': 'Q200804', 'id': 1, 'label': 'Predator'}, {'type': 'INTERNAL', 'name_': 'Q320218', 'id': 2, 'label': 'Carl Weathers'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q188652', 'id': 3, 'label': 'Rocky'}, {'type': 'INTERNAL', 'name_': 'Q724455', 'id': 4, 'label': 'Rocky Balboa'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q2289535', 'id': 5, 'label': 'Rocky Balboa'}], 'links': [{'name_': 'P437', 'source': 1, 'target': 0, 'label': 'distribution format'}, {'name_': 'P161', 'source': 1, 'target': 2, 'label': 'cast member'}, {'name_': 'P800', 'source': 2, 'target': 3, 'label': 'notable work'}, {'name_': 'P437', 'source': 4, 'target': 0, 'label': 'distribution format'}, {'name_': 'P1889', 'source': 4, 'target': 5, 'label': 'different from'}]}