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The Late Silurian Tonoloway Formation is a mapped limestone bedrock unit in Pennsylvania , Maryland , Virginia and West Virginia .
 location: Pennsylvania; location: Maryland; location: Virginia; location: West Virginia
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: Pennsylvania, Maryland, Virginia, West Virginia 
Answer:
 location: Pennsylvania; location: Maryland; location: Virginia; location: West Virginia