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The most popular Arab account holds that the word " Arab " came from an eponymous father named Ya'rub , who was supposedly the first to speak Arabic .
 person: Ya'rub
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:
 person: Ya'rub