Question: who sings say you won't let go
[{'answer': 'James Arthur', 'provenance': [{'wikipedia_id': '51574370', 'title': "Say You Won't Let Go", 'start_paragraph_id': 1, 'start_character': 66, 'end_paragraph_id': 1, 'end_character': 78, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '51574370', 'title': "Say You Won't Let Go", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 577, 'bleu_score': 0.957165036755604, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13623955024879861307}, 'section': 'Section::::Abstract.'}]}]