57340
In 2004 , TVA implemented recommendations from the Reservoir Operations Study ( ROS ) on how it operates the Tennessee River system ( the nation 's fifth largest ) .
 organization: TVA; organization: Reservoir Operations Study; organization: ROS; location: Tennessee River
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: TVA, Reservoir Operations Study, ROS, Tennessee River 
Answer:
 organization: TVA; organization: Reservoir Operations Study; organization: ROS; location: Tennessee River