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The Society for Effecting the Abolition of the Slave Trade met in 1791 at the Flying Horse Inn .
 organization: Society for Effecting the Abolition of the Slave Trade
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: Society for Effecting the Abolition of the Slave Trade 
Answer:
 organization: Society for Effecting the Abolition of the Slave Trade