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The Olive Baptist Church ( Colored ) was formed in Lawrence , Massachusetts in 1871 to serve the textile city 's small African American population , many of whom were recently freed slaves .
 location: Lawrence , 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: Lawrence , Massachusetts 
Answer:
 location: Lawrence , Massachusetts