140358
Young fish dispersed north by currents in the eastern Atlantic are known to migrate back to more tropical waters before the onset of winter ; however , if the fish fail to migrate , mass mortalities occur as the temperature falls below the species ' tolerance limits .
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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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