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The Nile Delta covers approximately 22,000 " km ( roughly equivalent in area to that of Massachusetts ) .
 location: Nile Delta; location: Massachusetts
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: Nile Delta, Massachusetts 
Answer:
 location: Nile Delta; location: Massachusetts