30
However , using liquefied natural gas as fuel for joint circulatory electricity generation has advantages of higher power generation efficiency and lower total cost , is beneficial to the environment , etc .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 None