What video game is taken so seriously in South Korea that it is officially recognized as an e-sport?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q884', 'id': 0, 'label': 'South Korea'}, {'type': 'INTERNAL', 'name_': 'Q483707', 'id': 1, 'label': 'XellOs'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q290106', 'id': 2, 'label': 'StarCraft'}], 'links': [{'name_': 'P27', 'source': 1, 'target': 0, 'label': 'country of citizenship'}, {'name_': 'P2416', 'source': 1, 'target': 2, 'label': 'sports discipline competed in'}]}