Question: who came up with the pledge of allegiance
[{'answer': 'Rear Admiral George Balch'}, {'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': 6951483446960511883}, 'section': 'Section::::Abstract.'}]}]