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_56 ( caps INTEGER, position VARCHAR, date_of_birth__age_ VARCHAR )

### Question ###
What is the lowest number of caps of the fullback player born on 13 April 1983?

### Accurate SQL ###

SELECT MIN(caps) FROM table_name_56 WHERE position = "fullback" AND date_of_birth__age_ = "13 april 1983"