77793
Auto camping was becoming all the rage and in some respects Duluth Pack was helping to build the forerunner to the first RV in America .
 location: Duluth
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: Duluth 
Answer:
 location: Duluth