Question: when was sagarmatha national park enlisted in world heritage list
[{'answer': '1979', 'provenance': [{'wikipedia_id': '375276', 'title': 'Sagarmatha National Park', 'start_paragraph_id': 6, 'start_character': 53, 'end_paragraph_id': 6, 'end_character': 57, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]