Question: when was the pledge of allegiance first used
[{'answer': 'October 12 , 1892', 'provenance': [{'wikipedia_id': '59581', 'title': 'Pledge of Allegiance', 'start_paragraph_id': 14, 'start_character': 607, 'end_paragraph_id': 14, 'end_character': 624, 'bleu_score': 1.0, 'section': "Section::::Origins.:Francis Bellamy's account.\n"}]}, {'provenance': [{'wikipedia_id': '59581', 'title': 'Pledge of Allegiance', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 717, 'bleu_score': 0.9822204502117851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16679324536064472293}, 'section': 'Section::::Origins.:Balch and Bellamy pledges.\n'}]}]