356972
On highways in the United States reverse curves are often announced by the posting of a W1-4L sign ( left-right reverse curve ) or a W1-4R sign ( right-left reverse curve ) , as called for in the Manual on Uniform Traffic Control Devices .
 location: United States
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: United States 
Answer:
 location: United States