Question: when was the greatest love of all written
[{'answer': '1977', 'provenance': [{'wikipedia_id': '36001084', 'title': 'The Greatest Love of All', 'start_paragraph_id': 1, 'start_character': 157, 'end_paragraph_id': 1, 'end_character': 161, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '36001084', 'title': 'The Greatest Love of All', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 751, 'bleu_score': 0.7907098483747571, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16463656687122504779}, 'section': 'Section::::Abstract.'}]}]