Question: how many floors is the empire state building observation deck
[{'answer': '86th floor', 'provenance': [{'wikipedia_id': '9736', 'title': 'Empire State Building', 'start_paragraph_id': 18, 'start_character': 558, 'end_paragraph_id': 18, 'end_character': 568, 'bleu_score': 1.0, 'section': 'Section::::History.:Planning process.\n'}]}, {'provenance': [{'wikipedia_id': '9736', 'title': 'Empire State Building', 'start_paragraph_id': 57, 'start_character': 90, 'end_paragraph_id': 57, 'end_character': 588, 'bleu_score': 0.67745687793746, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10492901570933865057}, 'section': 'Section::::Architecture.\n'}]}]