497
Before the creation of the United States Numbered Highway System in 1926 , the highway had been designated as a state highway numbered " M-16 " .
 location: United States Numbered Highway System
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: United States Numbered Highway System