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Newspaper and television journalists have hypothesized that the stock market downturn of 2002 was precipitated by reports of " accounting irregularities " at Enron , Worldcom , and other firms in the United States .
 organization: Enron; organization: Worldcom; location: United States
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Enron, Worldcom, United States 
Answer:
 organization: Enron; organization: Worldcom; location: United States