351862
In 1867 , he resigned from clinical work for health reasons , his position at Halle being filled by his former assistant , Richard von Volkmann ( 1830-1889 ) .
 organization: Halle; person: Richard von Volkmann
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: Halle, Richard von Volkmann 
Answer:
 organization: Halle; person: Richard von Volkmann