Question: who is the song should've said no about
[{'answer': 'former lover', 'provenance': [{'wikipedia_id': '17497396', 'title': "Should've Said No", 'start_paragraph_id': 1, 'start_character': 221, 'end_paragraph_id': 1, 'end_character': 233, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '17497396', 'title': "Should've Said No", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 501, 'bleu_score': 0.977397480575333, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16324690667851700723}, 'section': 'Section::::Abstract.'}]}]