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Such was the speed of construction that in May the basement and ground floor arcade were structurally complete and ready to be fitted out , and by the end of July the roof had been laid , floors having been added at the rate of one a week on average .
 None
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