91118
Air travel 's advantages put long-distance intercity railroad travel and bus lines under pressure , with most of the latter having withered away , whilst the former is still protected under nationalization through the continuing existence of Amtrak .
 organization: Amtrak
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: Amtrak 
Answer:
 organization: Amtrak