SELECT DISTINCT T1.Fname FROM STUDENT AS T1 JOIN VOTING_RECORD AS T2 ON T1.StuID  =  T2.VICE_PRESIDENT_Vote EXCEPT SELECT DISTINCT Fname FROM STUDENT WHERE city_code  =  "PIT"
Find the distinct first names of all the students who have vice president votes and whose city code is not PIT.
SELECT DISTINCT T1.Fname FROM STUDENT AS T1 JOIN VOTING_RECORD AS T2 ON T1.StuID = T2.VICE_PRESIDENT_Vote EXCEPT SELECT DISTINCT Fname FROM STUDENT WHERE city_code = `` PIT ''
select distinct t1 . fname from student as t1 join voting_record as t2 on t1 . stuid = t2 . vice_president_vote except select distinct fname from student where city_code = value
Find the distinct first names of all the students who have vice president votes and whose city code is not PIT .