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Travel ban was extended to UK , Ireland , but Americans may return home . Chad Wolf at {@Homeland Security@} calls lines at airports " unacceptable " and officials are working to address .
 UK, Ireland, Chad Wolf, Homeland Security
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: group, creative work, person, event, product, location, corporation 
Text: {0} 
Answer:
 UK, Ireland, Chad Wolf, Homeland Security