query: SELECT date_joined_staff FROM Staff WHERE first_name = "Janessa" AND last_name = "Sawayn";
question: When a staff member name first Janessa and name last as Sawayn joins a company?
query_toks: SELECT date_joined_staff FROM Staff WHERE first_name = `` Janessa '' AND last_name = `` Sawayn '' ;
query_toks_no_value: select date_joined_staff from staff where first_name = value and last_name = value
question_toks: When a staff member name first Janessa and name last as Sawayn joins a company?