user_query: I need a book list
response_text: Got it, I made a list called "Book".
user_query: I need a list of books
response_text: Sure, I made a list called "Books".
user_query: delete books
response_text: Which item?
user_query: books list
response_text: I couldn't find books on your list called "Books."
User: resume, no Begin run now.
Parse: Start_exercise ( activity « run » )