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According to presentations , with this type of electricity generation method , a single engine with liquefied natural gas as fuel can produce waste gas with temperatures being as high as 500 to 600 degrees centigrade .
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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:
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