user_query: add oil change to list called to-do 
response_text: Got it, I added oil.
user_query: Remove go to store on list called to-do 
user_query: check off go to store on list called to-do 
response_text: OK, I checked off go to store.
user_query: add go to store on list called to-do  
response_text: Sure, I added go to store.
User: Send a text to my husband that I'll be home by 10:00, no by 11:00.
Parse: Send_digital_object ( medium « text » object Electronic_message ( content « I'll be home » content « by 11:00 » ) recipient Personal_contact ( person « my husband » ) )