2838
Africans bearing the E-V 38 ( E1b1a ) likely traversed across the Sahara , from east to west , approximately 19,000 years ago .
 location: Sahara
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Sahara