993
A process of dieselisation and electrification took place , and by 1968 steam locomotion had been entirely replaced by diesel and electric traction , except for the Vale of Rheidol Railway ( a narrow-gauge tourist line ) .
 location: Vale of Rheidol Railway
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Vale of Rheidol Railway