12570
Harry M Stevens ( 1856-1934 ) was a food concessionaire from Derby , England who has been variously attributed and dismissed as the inventor of the hot dog , but has nevertheless been credited with being America 's foremost ballpark concessionaire .
 location: Derby
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: Derby 
Answer:
 location: Derby