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Murray Rothbard 's For a New Liberty likewise notes , " Anyone can capture fish in the ocean , or extract its resources , but only on the run , only as hunters and gatherers .
 Murray Rothbard
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Murray Rothbard