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In Central and South America , the alligator family is represented by six species of the subfamily Caimaninae , which differ from the alligator by the absence of a bony septum between the nostrils , and having ventral armour composed of overlapping bony scutes , each of which is formed of two parts united by a suture .
 Central, South America, Caimaninae
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Central, South America, Caimaninae