Which game in the Silent Hill series sold the most copies?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q30', 'id': 0, 'label': 'United States of America'}, {'type': 'INTERNAL', 'name_': 'Q208850', 'id': 1, 'label': 'single-player video game'}, {'type': 'INTERNAL', 'name_': 'Q100746750', 'id': 2, 'label': 'Wikimedia video game music discography'}, {'type': 'INTERNAL', 'name_': 'Q1868663', 'id': 3, 'label': 'Civilization'}, {'type': 'INTERNAL', 'name_': 'Q6941951', 'id': 4, 'label': 'music of the Civilization series'}, {'type': 'INTERNAL', 'name_': 'Q3960498', 'id': 5, 'label': 'Silent Hill'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q236821', 'id': 6, 'label': 'Silent Hill'}, {'type': 'INTERNAL', 'name_': 'Q3283277', 'id': 7, 'label': 'Silent Hill: Orphan'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q6343934', 'id': 8, 'label': 'music of Silent Hill'}, {'type': 'INTERNAL', 'name_': 'Q1986744', 'id': 9, 'label': 'The Last of Us'}, {'type': 'INTERNAL', 'name_': 'Q19961334', 'id': 10, 'label': 'Music of The Last of Us'}], 'links': [{'name_': 'P17', 'source': 0, 'target': 0, 'label': 'country'}, {'name_': 'P404', 'source': 3, 'target': 1, 'label': 'game mode'}, {'name_': 'P358', 'source': 3, 'target': 4, 'label': 'discography'}, {'name_': 'P31', 'source': 4, 'target': 2, 'label': 'instance of'}, {'name_': 'P17', 'source': 5, 'target': 0, 'label': 'country'}, {'name_': 'P1441', 'source': 5, 'target': 6, 'label': 'present in work'}, {'name_': 'P404', 'source': 7, 'target': 1, 'label': 'game mode'}, {'name_': 'P179', 'source': 7, 'target': 6, 'label': 'part of the series'}, {'name_': 'P31', 'source': 8, 'target': 2, 'label': 'instance of'}, {'name_': 'P495', 'source': 9, 'target': 0, 'label': 'country of origin'}, {'name_': 'P404', 'source': 9, 'target': 1, 'label': 'game mode'}, {'name_': 'P358', 'source': 9, 'target': 10, 'label': 'discography'}, {'name_': 'P31', 'source': 10, 'target': 2, 'label': 'instance of'}]}