231722
He was also an actor , author , university lecturer , Plaid Cymru activist and founder of the American CADW ( Committee to Aid the Defence of Wales ) .
 Plaid Cymru
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Plaid Cymru