system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
Give me a list of the only two American cyclists to win the Tour de France general classification.


assistant
Greg LaMond has won the Tour de France general classification three times. Lance Armstrong has won the Tour de France seven times, but had all of those victories stripped after admitting to using performance enhancing drugs.