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Although the operation was mounted too late to prevent the attacks on Saigon , the Australians successfully disrupted the communist lines of communication , limiting their freedom of manoeuvre to attack the Long Binh – Bien Hoa complex , while they were also able to successfully interdict their withdrawal , causing heavy casualties .
 Saigon, Long, Bien Hoa
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Saigon, Long, Bien Hoa