query: SELECT T1.name FROM instructor AS T1 JOIN teaches AS T2 ON T1.id  =  T2.id JOIN course AS T3 ON T2.course_id  =  T3.course_id WHERE T3.title  =  'C Programming'
question: Find the name of the instructors as teach C Programming course before.
query_toks: SELECT T1.name FROM instructor AS T1 JOIN teaches AS T2 ON T1.id = T2.id JOIN course AS T3 ON T2.course_id = T3.course_id WHERE T3.title = 'C Programming '
query_toks_no_value: select t1 . name from instructor as t1 join teaches as t2 on t1 . id = t2 . id join course as t3 on t2 . course_id = t3 . course_id where t3 . title = value
question_toks: Find the name of the instructors as teach C Programming course before.