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This sea level drop and the associated unconformity in North America separate the Mississippian subperiod from the Pennsylvanian subperiod .
 location: North America; location: Mississippian; location: Pennsylvanian
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: North America, Mississippian, Pennsylvanian 
Answer:
 location: North America; location: Mississippian; location: Pennsylvanian