Question: who is the song sweet caroline written about
[{'answer': 'Caroline Kennedy', 'provenance': [{'wikipedia_id': '1250659', 'title': 'Sweet Caroline', 'start_paragraph_id': 4, 'start_character': 341, 'end_paragraph_id': 4, 'end_character': 357, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1250659', 'title': 'Sweet Caroline', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 644, 'bleu_score': 0.9492014532814531, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2401517578518413901}, 'section': 'Section::::Abstract.'}]}]