66126
65 % of the herbicides used contained 2,4,5 - trichlorophenoxyacetic acid that About of dioxin-contaminated herbicides were sprayed over Southeast Asia during American combat operations .
 Southeast Asia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Southeast Asia