What was the first expansion called for World of Warcraft?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q30', 'id': 0, 'label': 'United States of America'}, {'type': 'INTERNAL', 'name_': 'Q941594', 'id': 1, 'label': 'video game industry'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q18344644', 'id': 2, 'label': 'microtransactions'}, {'type': 'INTERNAL', 'name_': 'Q737619', 'id': 3, 'label': 'World of Warcraft: Cataclysm'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q131007', 'id': 4, 'label': 'World of Warcraft'}, {'type': 'INTERNAL', 'name_': 'Q42623244', 'id': 5, 'label': 'World of Warcraft: Battle for Azeroth'}, {'type': 'INTERNAL', 'name_': 'Q7670520', 'id': 6, 'label': 'TJ Ramini'}, {'type': 'INTERNAL', 'name_': 'Q96417649', 'id': 7, 'label': 'Among Us'}], 'links': [{'name_': 'P17', 'source': 0, 'target': 0, 'label': 'country'}, {'name_': 'P1269', 'source': 2, 'target': 1, 'label': 'facet of'}, {'name_': 'P495', 'source': 3, 'target': 0, 'label': 'country of origin'}, {'name_': 'P8646', 'source': 3, 'target': 4, 'label': 'expansion of'}, {'name_': 'P495', 'source': 5, 'target': 0, 'label': 'country of origin'}, {'name_': 'P8646', 'source': 5, 'target': 4, 'label': 'expansion of'}, {'name_': 'P101', 'source': 6, 'target': 1, 'label': 'field of work'}, {'name_': 'P3919', 'source': 6, 'target': 5, 'label': 'contributed to creative work'}, {'name_': 'P495', 'source': 7, 'target': 0, 'label': 'country of origin'}, {'name_': 'P7936', 'source': 7, 'target': 2, 'label': 'business model'}]}