What is the name of Ed Sheeran's first US number 1 single?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q30', 'id': 0, 'label': 'United States of America'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q7056', 'id': 1, 'label': 'UTC+10:00'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q47447', 'id': 2, 'label': 'Ed Sheeran'}, {'type': 'INTERNAL', 'name_': 'Q5346814', 'id': 3, 'label': 'Edwin Sherin'}], 'links': [{'name_': 'P17', 'source': 0, 'target': 0, 'label': 'country'}, {'name_': 'P421', 'source': 0, 'target': 1, 'label': 'located in time zone'}, {'name_': 'P27', 'source': 3, 'target': 0, 'label': 'country of citizenship'}, {'name_': 'P1889', 'source': 3, 'target': 2, 'label': 'different from'}]}