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Cornish nationalists have organised into two political parties : Mebyon Kernow , formed in 1951 , and the Cornish Nationalist Party .
 Mebyon Kernow, Cornish Nationalist Party
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Mebyon Kernow, Cornish Nationalist Party