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Friday the 18th of September 1998 marked the grand opening , and official ribbon cutters and special guest performers , Penn & Teller , took the stage and over the course of the evening performed some of their classic routines .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
 None