Question: Does Amtrak operate four wheel vehicles?, Answer:Yes, Description of Amtrak: Intercity rail operator in the United States, Fact1: Amtrak is a transportation service., Fact2: Amtrak transports people with trains and buses., Fact3: A bus is a four wheel vehicle. 
Step1: What kinds of vehicles does Amtrak use?, Step2: Do any of #1 have four wheels?, Wikipedia page for step 1: Amtrak, Wikipedia page for step 2: , not_definitive_answer: False, incorrect_answer: False