user_query: put Patsy Cline on the music list
response_text: Sure, I added Patsy Cline.
user_query: rescind that
response_text: Got it. Rescind on your list called "music". Anything else?
user_query: reverse the last
response_text: Alright. Rescind on your list called "music". Anything else?
User: Stop yoga on Fitbit.
Parse: Stop_exercise ( activity « yoga » provider « Fitbit » )