Which British performer won the most Grammys?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q6266', 'id': 0, 'label': 'nation'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q41254', 'id': 1, 'label': 'Grammy Awards'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q842438', 'id': 2, 'label': 'British'}, {'type': 'INTERNAL', 'name_': 'Q4766925', 'id': 3, 'label': 'Anna Clyne'}], 'links': [{'name_': 'P31', 'source': 2, 'target': 0, 'label': 'instance of'}, {'name_': 'P1411', 'source': 3, 'target': 1, 'label': 'nominated for'}, {'name_': 'P172', 'source': 3, 'target': 2, 'label': 'ethnic or cultural origin'}]}