instruction: Who won womens doubles the year magn s ingi helgason tinna helgad ttir won mixed doubles and ragna ing lfsd ttir won womens singles in 2010
response: SELECT "Womens doubles" FROM table_19677 WHERE "Mixed doubles" = 'Magnús Ingi Helgason Tinna Helgadóttir' AND "Womens singles" = 'Ragna Ingólfsdóttir' AND "Year" = '2010'