6054
It is not to be confused with the 12th-century Brightley Priory near Okehampton , an error made by the Devon historian Tristram Risdon in his 1630 work " A Survey of Devon " in his account of the parish of Chittlehampton .
 Okehampton, Tristram Risdon, Chittlehampton
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Okehampton, Tristram Risdon, Chittlehampton