Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

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

### Question ###
find all dependent names who have a spouse relation with some employee.

### Accurate SQL ###

SELECT dependent_name FROM dependent WHERE relationship = 'Spouse'