query: SELECT name FROM artist WHERE artist_id NOT IN (SELECT artist_id FROM exhibition)
question: What-all being the names of artists have not had any exhibitions one?
query_toks: SELECT name FROM artist WHERE artist_id NOT IN ( SELECT artist_id FROM exhibition )
query_toks_no_value: select name from artist where artist_id not in ( select artist_id from exhibition )
question_toks: What-all being the names of artists have not had any exhibitions one?