query: SELECT CName FROM COURSE WHERE Credits  =  3 UNION SELECT CName FROM COURSE WHERE Credits  =  1 AND Hours  =  4
question: What-all are the names of courses give either 3 credit, or 1 credits and 4 hour?
query_toks: SELECT CName FROM COURSE WHERE Credits = 3 UNION SELECT CName FROM COURSE WHERE Credits = 1 AND Hours = 4
query_toks_no_value: select cname from course where credits = value union select cname from course where credits = value and hours = value
question_toks: What-all are the names of courses give either 3 credit, or 1 credits and 4 hour?