Question: who sings the song only know your lover when you let her go
[{'answer': 'English singer - songwriter Passenger', 'provenance': [{'wikipedia_id': '38195721', 'title': 'Let Her Go', 'start_paragraph_id': 1, 'start_character': 47, 'end_paragraph_id': 1, 'end_character': 83, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '38195721', 'title': 'Let Her Go', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 430, 'bleu_score': 0.896787073099583, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17905842196184397825}, 'section': 'Section::::Abstract.'}]}]