683
A federal judge dismissed the lawsuit , saying that allowing Duncan ' s claim to proceed would amount to allowing state regulation of a ` ` service ' ' provided by Northwest on its trans - Pacific flights .
 state, Northwest, its, A federal judge, Duncan, Pacific
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 state, Northwest, its, A federal judge, Duncan, Pacific