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
Which of these forms of Bay Area transit are AC Transit bus lines and which are trains: Caltrain, BART, 51B, 36, 51A, 79, VTA Light Rail.


assistant
The trains are the Caltrain, BART, and VTA Light Rail, and the bus lines are the 51B, 36, 51A, and 79.