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 table_name_20 ( family_relations VARCHAR, throne_name VARCHAR )

### Question ###
What are the family relations of the king with the throne name 303?

### Accurate SQL ###

SELECT family_relations FROM table_name_20 WHERE throne_name = "303"