Question: when was tar creek named a superfund site
[{'answer': '1983', 'provenance': [{'wikipedia_id': '17402468', 'title': 'Tar Creek Superfund site', 'start_paragraph_id': 1, 'start_character': 69, 'end_paragraph_id': 1, 'end_character': 73, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '17402468', 'title': 'Tar Creek Superfund site', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 664, 'bleu_score': 0.982060959997838, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12326748119837238412}, 'section': 'Section::::Abstract.'}]}]