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While the state has no sales tax or income tax , royalty revenues from the Prudhoe Bay Oil Field ( consisting mostly of state-owned lands ) have supported large state budgets since 1980 .
 location: Prudhoe Bay Oil Field
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Prudhoe Bay Oil Field