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Gascoigne had the command of one of the regiments of horse which took possession of Colchester in Essex on 12 June 1648 , leading to the siege of Colchester .
 Colchester, Essex, Colchester
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Colchester, Essex, Colchester