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Frederick Luckenbach carried coal for use by the United States Army from Cardiff and Belfast , Ireland , to French ports until 20 March 1919 , when she sailed from Cardiff for New York City .
 United States Army, Cardiff, French, Cardiff, New York City
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 United States Army, Cardiff, French, Cardiff, New York City