303417
A signal travelling along an electrical transmission line will be partly , or wholly , reflected back in the opposite direction when the travelling signal encounters a discontinuity in the transmission parameters of the line , or at the far end of the line if the line is not correctly terminated in its characteristic impedance .
 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