Question: when was the pledge of allegiance written and by whom
[{'answer': 'August 1892 by Francis Bellamy', 'provenance': [{'wikipedia_id': '59581', 'title': 'Pledge of Allegiance', 'start_paragraph_id': 7, 'start_character': 76, 'end_paragraph_id': 7, 'end_character': 106, 'bleu_score': 1.0, 'section': 'Section::::Origins.:Balch and Bellamy pledges.\n'}]}, {'provenance': [{'wikipedia_id': '59581', 'title': 'Pledge of Allegiance', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 522, 'bleu_score': 0.895188560139314, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12705096222866735704}, 'section': 'Section::::Origins.:Balch and Bellamy pledges.\n'}]}]