87915
Preoccupied with these campaigns , however , he neglected lending assistance to the governor of Khurasan , Nasr ibn Sayyar , when he was faced with the outbreak of the Abbasid Revolution .
 location: Khurasan; person: Nasr ibn Sayyar
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Khurasan, Nasr ibn Sayyar 
Answer:
 location: Khurasan; person: Nasr ibn Sayyar