8302
The last serious commercial traffic on the canal was the carriage of bricks from Walkeringham to West Stockwith , which ended in 1955 , although there was a small trade in warp , a fine silt dredged from the Trent at the mouth of the River Idle , and used by the cutlery trade in Sheffield for polishing metal , which lasted into the early 1960 s .
 location: Walkeringham; location: West Stockwith; location: Trent; location: River Idle; location: Sheffield
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: Walkeringham; location: West Stockwith; location: Trent; location: River Idle; location: Sheffield