Question: Can you list all of the grant start dates of those documents please?
SQL: SELECT T3.grant_start_date FROM Documents AS T1 JOIN Document_Types AS T2 ON T1.document_type_code   =   T2.document_type_code JOIN Grants AS T3 ON T1.grant_id   =   T3.grant_id WHERE T2.document_description  =  'Initial Application'