user_query: Add chicken to the list that has cheese on it
response_text: Got it. Which list do you want to add to?
User: Um email @trac.com with I'm running late.
Parse: Send_digital_object ( medium « email » object Electronic_message ( content « I'm running late » ) recipient Contactable_entity ( contact_id Email_address ( id_form « @trac.com » ) ) )