How many queens has Great Britain had?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q161885', 'id': 0, 'label': 'Kingdom of Great Britain'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q23666', 'id': 1, 'label': 'Great Britain'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q18424', 'id': 2, 'label': 'Queens'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q1058775', 'id': 3, 'label': 'Flushing, Queens'}, {'type': 'INTERNAL', 'name_': 'Q1056326', 'id': 4, 'label': 'Shea Stadium'}, {'type': 'INTERNAL', 'name_': 'Q2932793', 'id': 5, 'label': 'Cadwallader Colden'}], 'links': [{'name_': 'P17', 'source': 0, 'target': 0, 'label': 'country'}, {'name_': 'P1889', 'source': 0, 'target': 1, 'label': 'different from'}, {'name_': 'P1889', 'source': 1, 'target': 0, 'label': 'different from'}, {'name_': 'P276', 'source': 4, 'target': 2, 'label': 'location'}, {'name_': 'P131', 'source': 4, 'target': 3, 'label': 'located in the administrative territorial entity'}, {'name_': 'P27', 'source': 5, 'target': 0, 'label': 'country of citizenship'}, {'name_': 'P20', 'source': 5, 'target': 3, 'label': 'place of death'}]}