CREATE TABLE VOTING_RECORD (Id VARCHAR2)
CREATE TABLE STUDENT (LName VARCHAR2, PRESIDENT_Vote VARCHAR2, Advisor VARCHAR2)

Find the distinct last names of all the students who have president votes and whose advisor is not 2192.
SELECT DISTINCT T1.LName FROM STUDENT AS T1 JOIN VOTING_RECORD AS T2 ON T1.StuID = PRESIDENT_Vote EXCEPT SELECT DISTINCT LName FROM STUDENT WHERE Advisor = "2192"
SELECT DISTINCT "T1"."LName" FROM "STUDENT" "T1" JOIN "VOTING_RECORD" "T2" ON "PRESIDENT_Vote" = "T1"."StuID" EXCEPT SELECT DISTINCT "LName" FROM "STUDENT" WHERE "2192" = "Advisor"