9848
Its northern terminus was at the village of Sennybridge in the Usk Valley whilst its southern ends lay at Abercraf and Ystradgynlais in the upper Swansea Valley some 20 km to the south .
 location: Sennybridge; location: Abercraf; location: Ystradgynlais
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: Sennybridge, Abercraf, Ystradgynlais 
Answer:
 location: Sennybridge; location: Abercraf; location: Ystradgynlais