Question: when did the infantry start wearing the blue cord
[{'answer': '1952', 'provenance': [{'wikipedia_id': '25940382', 'title': 'Infantry blue cord', 'start_paragraph_id': 8, 'start_character': 534, 'end_paragraph_id': 8, 'end_character': 538, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '25940382', 'title': 'Infantry blue cord', 'start_paragraph_id': 8, 'start_character': 44, 'end_paragraph_id': 8, 'end_character': 507, 'bleu_score': 0.6615353492559131, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17119742204298730728}, 'section': 'Section::::History.\n'}]}]