88766
To secure this important transport route , the Irgenhausen Castrum was built .
 location: Irgenhausen Castrum
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: Irgenhausen Castrum 
Answer:
 location: Irgenhausen Castrum