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The split between D1a1 ( which is common in Tibet and has a medium distribution in Central Asia ) happened likely in Central Asia , while some others suggest an instant split during the origin of haplogroup D itself , as the Japanese branch has five unique mutations not found in any other D-branch .
 Tibet, Central Asia, Central 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:
 Tibet, Central Asia, Central Asia