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The Abbasids led a revolt against the Umayyads and defeated them in the Battle of the Zab effectively ending their rule in all parts of the Empire with the exception of al-Andalus .
 location: Abbasids; location: Empire; location: al-Andalus
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: Abbasids; location: Empire; location: al-Andalus