Question: when did channel islands became a national park
[{'answer': 'March 5 , 1980', 'provenance': [{'wikipedia_id': '330463', 'title': 'Channel Islands National Park', 'start_paragraph_id': 2, 'start_character': 414, 'end_paragraph_id': 2, 'end_character': 428, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]