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Giant Group Ltd. said it terminated negotiations for the purchase of Aspen Airways , a Denver - based regional carrier that operates the United Express connector service under contract to UAL Corp. 's United Airlines .
 organization: Giant Group Ltd.; organization: Aspen Airways; geographical social political: Denver; organization: United Express; organization: UAL Corp. 's; organization: United Airlines
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
Answer:
 organization: Giant Group Ltd.; organization: Aspen Airways; geographical social political: Denver; organization: United Express; organization: UAL Corp. 's; organization: United Airlines