Question: who sing 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.'}]}, {'answer': 'British singer and songwriter James Arthur'}, {'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': 16947077814667455080}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '51877668', 'title': 'Neil Ormandy', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['He co-wrote James Arthur\'s worldwide hit single "Say You Won\'t Let Go", and is the owner of SILO Music.', 'He co-wrote James Arthur\'s worldwide hit single "Say You Won\'t Let Go",', 'Neil Richard Ormandy (born April 1, 1981) is a British musician, songwriter and producer based in Los Angeles. He co-wrote James Arthur\'s worldwide hit single "Say You Won\'t Let Go", and is the owner of SILO Music.']}}]}, {'provenance': [{'wikipedia_id': '51574370', 'title': "Say You Won't Let Go", 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['"Say You Won\'t Let Go" is a song by English singer and songwriter James Arthur.', '"Say You Won\'t Let Go" is a song by English singer and songwriter James Arthur.', '"Say You Won\'t Let Go" is a song by English singer and songwriter James Arthur.']}}]}]