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The spine of the Cotswolds runs southwest to northeast through six counties , particularly Gloucestershire , west Oxfordshire and south western Warwickshire .
 Cotswolds, Gloucestershire, Oxfordshire, Warwickshire
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Cotswolds, Gloucestershire, Oxfordshire, Warwickshire