What was the nickname of Louis Armstrong?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q191228', 'id': 0, 'label': 'ZKM | Center for Art and Media Karlsruhe'}, {'type': 'INTERNAL', 'name_': 'Q2500638', 'id': 1, 'label': 'creator'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q1779', 'id': 2, 'label': 'Louis Armstrong'}, {'type': 'INTERNAL', 'name_': 'Q2545780', 'id': 3, 'label': 'Gary Hill'}], 'links': [{'name_': 'P1687', 'source': 1, 'target': 2, 'label': 'Wikidata property'}, {'name_': 'P6379', 'source': 3, 'target': 0, 'label': 'has works in the collection'}, {'name_': 'P106', 'source': 3, 'target': 1, 'label': 'occupation'}, {'name_': 'P6275', 'source': 3, 'target': 3, 'label': 'copyright representative'}]}