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The district includes all of Klickitat and Skamania counties , most of western Yakima County , and a slice of eastern Clark County .
 Klickitat, Skamania, Yakima County, Clark County
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Klickitat, Skamania, Yakima County, Clark County