query: SELECT CLASS ,  count(*) FROM race GROUP BY CLASS
question: What-all the different classes of races, and how many races are corresponding to each?
query_toks: SELECT CLASS , count ( * ) FROM race GROUP BY CLASS
query_toks_no_value: select class , count ( * ) from race group by class
question_toks: What-all the different classes of races, and how many races are corresponding to each?