Question: who released the uk's biggest selling single of 2017
[{'answer': 'Ed Sheeran', 'provenance': [{'wikipedia_id': '52710791', 'title': 'List of UK top-ten singles in 2017', 'start_paragraph_id': 3, 'start_character': 216, 'end_paragraph_id': 3, 'end_character': 226, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '52710791', 'title': 'List of UK top-ten singles in 2017', 'start_paragraph_id': 29, 'start_character': 0, 'end_paragraph_id': 29, 'end_character': 774, 'bleu_score': 0.965664648905967, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6116599000800535628}, 'section': 'Section::::Background.:Best-selling singles.\n'}]}]