388511
There are three theories on the reason for this : The extension of the line occurred in 1779 and 1780 , to where the line would first cross the Cumberland River .
 None
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:  
Answer:
 None