CREATE TABLE student (stuid DECIMAL, lname TEXT, fname TEXT, age DECIMAL, sex TEXT, major DECIMAL, advisor DECIMAL, city_code TEXT)
CREATE TABLE faculty_participates_in (facid DECIMAL, actid DECIMAL)
CREATE TABLE activity (actid DECIMAL, activity_name TEXT)
CREATE TABLE faculty (facid DECIMAL, lname TEXT, fname TEXT, rank TEXT, sex TEXT, phone DECIMAL, room TEXT, building TEXT)
CREATE TABLE participates_in (stuid DECIMAL, actid DECIMAL)

Show the ids of the faculty who don't participate in any activity.
SELECT facid FROM faculty EXCEPT SELECT facid FROM faculty_participates_in
SELECT "facid" FROM "faculty" EXCEPT SELECT "facid" FROM "faculty_participates_in"