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History The band was formed by Reevsy ( guitar , vocals ) , Kalvin " Kalv " Piper ( bass ) , and Steve Charlesworth ( drums ) , the first two having previously been in the Stoke-on-Trent band Plasmid .
 location: Stoke-on-Trent
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: Stoke-on-Trent 
Answer:
 location: Stoke-on-Trent