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The River Thames flows from the Cotswolds and is navigable from Inglesham and Lechlade-on-Thames downstream to Oxford .
 River Thames, Cotswolds, Inglesham, Lechlade-on-Thames, Oxford
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 River Thames, Cotswolds, Inglesham, Lechlade-on-Thames, Oxford