255845
This species was synonymized subjectively with Canis lupus ( Gray wolf ) in 1954 by B. Kurten in 1974 and B. Kurten and E. Anderson in 1980 , but is currently accepted as valid .
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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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