Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
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?
### Answer:
SELECT MIN(caps) FROM table_name_56 WHERE position = "fullback" AND date_of_birth__age_ = "13 april 1983"