36329
Under the duke were three aristocratic families , whose heads bore the title of viscount and held hereditary positions in the Lu bureaucracy .
 location: Lu
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: Lu 
Answer:
 location: Lu