Question: who sang the song how can you mend a broken heart
[{'answer': 'the Bee Gees', 'provenance': [{'wikipedia_id': '5516321', 'title': 'How Can You Mend a Broken Heart', 'start_paragraph_id': 1, 'start_character': 56, 'end_paragraph_id': 1, 'end_character': 68, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5516321', 'title': 'How Can You Mend a Broken Heart', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 290, 'bleu_score': 0.9663744727315161, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10286330932108192698}, 'section': 'Section::::Abstract.'}]}]