Question: when was the land rover defender first built
[{'answer': 'in the 1980s', 'provenance': [{'wikipedia_id': '884080', 'title': 'Land Rover Defender', 'start_paragraph_id': 1, 'start_character': 145, 'end_paragraph_id': 1, 'end_character': 157, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '1983', 'provenance': [{'wikipedia_id': '884080', 'title': 'Land Rover Defender', 'start_paragraph_id': 5, 'start_character': 45, 'end_paragraph_id': 5, 'end_character': 49, 'bleu_score': 1.0, 'section': 'Section::::Name and badge distinctions.\n'}]}, {'answer': '1991'}, {'provenance': [{'wikipedia_id': '884080', 'title': 'Land Rover Defender', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1150092489004679003}, 'section': 'Section::::Abstract.'}]}, {}, {'provenance': [{'wikipedia_id': '884080', 'title': 'Land Rover Defender', 'section': 'Section::::Name and badge distinctions.\n', 'start_paragraph_id': 8, 'end_paragraph_id': 8, 'meta': {'evidence_span': ['Production of the model now known as the Defender began in 1983', 'NAS Defenders also carried a cast plaque on the rear tub in the original style of the Series Station wagons with "Defender 110" or "Defender 90" below the Land Rover lozenge and the vehicle\'s unique limited edition production run number. Production of the model now known as the Defender began in 1983', 'NAS Defenders also carried a cast plaque on the rear tub in the original style of the Series Station wagons with "Defender 110" or "Defender 90" below the Land Rover lozenge and the vehicle\'s unique limited edition production run number. Production of the model now known as the Defender began in 1983']}}]}, {'provenance': [{'wikipedia_id': '884080', 'title': 'Land Rover Defender', 'section': 'Section::::Export and foreign-built versions.:Defender licensees and clones.\n', 'start_paragraph_id': 72, 'end_paragraph_id': 72, 'meta': {'evidence_span': ['Defenders, derivatives and clones have been built by a number of manufacturers including Santana Motors in Spain (modified Land Rover clones made from 1958 until the licence expired in 1983;', 'Defenders, derivatives and clones have been built by a number of manufacturers including Santana Motors in Spain (modified Land Rover clones made from 1958 until the licence expired in 1983;']}}]}]