user_query: add soccer to Sports list.
response_text: OK, I added soccer.
user_query: Add basball to this list instead.
response_text: Sure. Baseball on your list called "sports". Anything else?
User: Add Christmas gifts to the to my first list.
Parse: Add_item_to_list ( items « Christmas gifts » list_position List_position ( absolute_position « first » ) list_singular_or_plural « list » )