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_14903999_1 WHERE mixed_doubles = "Magnús Ingi Helgason Tinna Helgadóttir" AND womens_singles = "Ragna Ingólfsdóttir" AND year = 2010