Question: who sang the original killing me softly song
[{'answer': 'Lori Lieberman', 'provenance': [{'wikipedia_id': '1718553', 'title': 'Killing Me Softly with His Song', 'start_paragraph_id': 2, 'start_character': 43, 'end_paragraph_id': 2, 'end_character': 57, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1718553', 'title': 'Killing Me Softly with His Song', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 363, 'bleu_score': 0.6080458407368811, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3793331611401544993}, 'section': 'Section::::Lori Lieberman version and disputed origins.\n'}]}]