Question: when was the pledge of allegiance first created
[{'answer': '1887', 'provenance': [{'wikipedia_id': '59581', 'title': 'Pledge of Allegiance', 'start_paragraph_id': 33, 'start_character': 94, 'end_paragraph_id': 33, 'end_character': 98, 'bleu_score': 1.0, 'section': 'Section::::Salute.\n'}]}, {'provenance': [{'wikipedia_id': '59581', 'title': 'Pledge of Allegiance', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 533, 'bleu_score': 0.603657145882859, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10828764635493600193}, 'section': 'Section::::Abstract.'}]}]