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Of course , there have been companies whose performance would perfectly mimic the validity of this idea , but Psuedo . com failed without producing a single show , and Broadcast . com was swallowed for $ 6 billion by Yahoo ! , to Yahoo ! ' s great regret .
 companies whose performance would perfectly mimic the validity of this idea, whose, Psuedo . com, Broadcast . com, Yahoo, Yahoo
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 companies whose performance would perfectly mimic the validity of this idea, whose, Psuedo . com, Broadcast . com, Yahoo, Yahoo