Question: when was the linq hotel and casino built
[{'answer': '1959', 'provenance': [{'wikipedia_id': '1976132', 'title': 'The Linq', 'start_paragraph_id': 2, 'start_character': 24, 'end_paragraph_id': 2, 'end_character': 28, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]