8847
And US and British troops stormed a house in suburban Baghdad and freed three Christian peace activists held nearly four months .
 US, British, Baghdad, three, Christian, four months
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 US, British, Baghdad, three, Christian, four months