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 claim_headers ( amount_claimed INTEGER, claim_header_id VARCHAR )
TABLE: CREATE TABLE claims_documents ( claim_id VARCHAR, created_date VARCHAR )

### Question ###
Find the total amount claimed in the most recently created document.

### Accurate SQL ###

SELECT SUM(t1.amount_claimed) FROM claim_headers AS t1 JOIN claims_documents AS t2 ON t1.claim_header_id = t2.claim_id WHERE t2.created_date = (SELECT created_date FROM claims_documents ORDER BY created_date LIMIT 1)