Question: when was the venetian hotel in las vegas built
[{'answer': 'May 3 , 1999', 'provenance': [{'wikipedia_id': '1015361', 'title': 'The Venetian Las Vegas', 'start_paragraph_id': 6, 'start_character': 21, 'end_paragraph_id': 6, 'end_character': 33, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '1015361', 'title': 'The Venetian Las Vegas', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 329, 'bleu_score': 0.876484548290347, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17827654327545152349}, 'section': 'Section::::History.\n'}]}]