Write SQL query to solve given problem: Who is the winning team in a match held on April 26, 2009 with a winning margin of 6 points?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T1.Team_Name FROM Team AS T1 INNER JOIN Match AS T2 ON T1.team_id = T2.match_winner WHERE T2.Win_Margin = 6 AND T2.Match_Date = '2009-04-26'