CREATE TABLE dependent (essn DECIMAL, dependent_name TEXT, sex TEXT, bdate TEXT, relationship TEXT)
CREATE TABLE department (dname TEXT, dnumber DECIMAL, mgr_ssn DECIMAL, mgr_start_date TEXT)
CREATE TABLE project (pname TEXT, pnumber DECIMAL, plocation TEXT, dnum DECIMAL)
CREATE TABLE employee (fname TEXT, minit TEXT, lname TEXT, ssn DECIMAL, bdate TEXT, address TEXT, sex TEXT, salary DECIMAL, super_ssn DECIMAL, dno DECIMAL)
CREATE TABLE works_on (essn DECIMAL, pno DECIMAL, hours DECIMAL)
CREATE TABLE dept_locations (dnumber DECIMAL, dlocation TEXT)

find all dependent names who have a spouse relation with some employee.
SELECT dependent_name FROM dependent WHERE relationship = 'Spouse'
SELECT "dependent_name" FROM "dependent" WHERE "relationship" = 'Spouse'