user: Question: What is the start source of the IRL country, which ended on 13 April?
Columns: ['Name', 'Country', 'Loan Club', 'Started', 'Ended', 'Start Source']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Flood', 'IRL', 'Dundee United', '2 July', '30 January', 'BBC Sport']
SQL:

assistant: SELECT "Start Source" FROM "Table" WHERE "Country" = 'IRL' AND "Ended" = '13 April';