61412
A large feral population became established in northern Australia in the late 19th century , and there are smaller feral herds in Papua New Guinea , Tunisia , and northeastern Argentina .
 Australia, Papua New Guinea, Tunisia, Argentina
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Australia, Papua New Guinea, Tunisia, Argentina