Question: who is widely considered to be the author of the serenity prayer
[{'answer': 'Reinhold Niebuhr', 'provenance': [{'wikipedia_id': '497935', 'title': 'Serenity Prayer', 'start_paragraph_id': 1, 'start_character': 87, 'end_paragraph_id': 1, 'end_character': 103, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '497935', 'title': 'Serenity Prayer', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 139, 'bleu_score': 0.770900242823739, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15019713518999490362}, 'section': 'Section::::Abstract.'}]}]