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The completion of a branch from there to Harrogate via Wetherby and Tadcaster by the Y&NM in 1848 gave the modest wayside station new importance and within two years it had become a calling point on the new East Coast Main Line from York to London with the opening of a line from Burton Salmon to Knottingley ( trains then continuing via Askern and Doncaster ) .
 Tadcaster, York, London, Burton Salmon, Knottingley
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Tadcaster, York, London, Burton Salmon, Knottingley