3778
Warrants issued for arrest of U . S . , UK nationals in alleged bribery case http://t.co/tGq4X3nIBT
 U . S ., UK
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 U . S ., UK