43683
His friends then make several claims , such as the third rail is n't live unless a train is coming or that trains can quickly brake ; all of which are rebutted by the narrator who explains that the third rail is always lives , and that a train can neither brake quickly nor swerve .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None