22092
The main rivers that have their sources in this range are the Sever and Nisa flowing towards the Tagus , as well as the Caia River and its tributary , the Arronches , flowing towards the Guadiana .
 location: Arronches
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: Arronches 
Answer:
 location: Arronches