query: SELECT count(DISTINCT PROF_NUM) FROM CLASS WHERE CRS_CODE  =  "ACCT-211"
question: How many professor are teaching clas code ACCT-211?
query_toks: SELECT count ( DISTINCT PROF_NUM ) FROM CLASS WHERE CRS_CODE = `` ACCT-211 ''
query_toks_no_value: select count ( distinct prof_num ) from class where crs_code = value
question_toks: How many professor are teaching clas code ACCT-211?