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Rt. . Rev. William Thomas D.D. ( 2 February 1613 – 25 June 1689 ) was a Welsh Anglican bishop , serving as Bishop of St David 's and Bishop of Worcester .
 Welsh
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Welsh