Question: when did the us military start using hummers
[{'answer': 'In 1979', 'provenance': [{'wikipedia_id': '14396', 'title': 'Humvee', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '14396', 'title': 'Humvee', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 995, 'bleu_score': 0.86157038395975, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7202073876981972230}, 'section': 'Section::::History.\n'}]}]