12039
In 1852 , he accepted a medical professorship of comparative anatomy at Charlestown , Massachusetts , but resigned in two years .
 location: Charlestown; 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: Charlestown, Massachusetts 
Answer:
 location: Charlestown; location: Massachusetts