Question: how many rooms does the luxury crown metropol perth have
[{'answer': '500 - room'}, {'provenance': [{'wikipedia_id': '2501801', 'title': 'Crown Perth', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 481, 'bleu_score': 0.738134644019083, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11772683944801042987}, 'section': 'Section::::Abstract.'}]}]