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They initially sought to extend the navigable section beyond Worksop , but when progress was slow , moved to working on the Chesterfield end .
 location: Worksop; location: Chesterfield
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Worksop; location: Chesterfield