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The protected areas established in 1954 are Gal Oya National Park , Senanayake Samudraya Sanctuary , Gal Oya valley north-east Sanctuary , and Gal Oya valley south-east Sanctuary .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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