Question: when was the term sustainable development first used
[{'answer': '1980', 'provenance': [{'wikipedia_id': '29501', 'title': 'Sustainable development', 'start_paragraph_id': 9, 'start_character': 3, 'end_paragraph_id': 9, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::History of sustainability.\n'}]}, {'provenance': [{'wikipedia_id': '29501', 'title': 'Sustainable development', 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 671, 'bleu_score': 0.980097014099621, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4707129444411181683}, 'section': 'Section::::History of sustainability.\n'}]}]