1517
Recent sequencing of Neanderthal and Denisovan and some Melanesians have an additional 4 – 6 % of Denisovan alleles .
 Neanderthal, Denisovan, Denisovan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Neanderthal, Denisovan, Denisovan