Question: when was the first mercedes g class made
[{'answer': '1979', 'provenance': [{'wikipedia_id': '736917', 'title': 'Mercedes-Benz G-Class', 'start_paragraph_id': 5, 'start_character': 184, 'end_paragraph_id': 5, 'end_character': 188, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '736917', 'title': 'Mercedes-Benz G-Class', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 458, 'bleu_score': 0.976043556018343, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6969733531389389041}, 'section': 'Section::::History.\n'}]}]