query: SELECT count(*) FROM Visitors WHERE Tourist_ID NOT IN ( SELECT Tourist_ID FROM Visits )
question: Do Count number alla tourist at ain't visited no place.
query_toks: SELECT count ( * ) FROM Visitors WHERE Tourist_ID NOT IN ( SELECT Tourist_ID FROM Visits )
query_toks_no_value: select count ( * ) from visitors where tourist_id not in ( select tourist_id from visits )
question_toks: Do Count number alla tourist at ain't visited no place.