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When Hasan ibn Zayd , a descendant of Husayn 's brother Hasan , established his rule over Tabaristan in the 860s , Hasan joined him there .
 person: Hasan ibn; person: Husayn; person: Hasan; person: Hasan
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: Hasan ibn, Husayn, Hasan, Hasan 
Answer:
 person: Hasan ibn; person: Husayn; person: Hasan; person: Hasan