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Alexandria not only housed the biggest library for medical records and books of the liberal arts in the world during the time of the Greeks , but was also home to many medical practitioners and philosophers .
 location: Alexandria
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: Alexandria 
Answer:
 location: Alexandria