Question: when was the pledge adopted into the flag code
[{'answer': '1942', 'provenance': [{'wikipedia_id': '59581', 'title': 'Pledge of Allegiance', 'start_paragraph_id': 1, 'start_character': 455, 'end_paragraph_id': 1, 'end_character': 459, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'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': 444375139445027154}, 'section': 'Section::::Abstract.'}]}]