user: Question: Who won womens doubles the year Magnús Ingi Helgason Tinna Helgadóttir won mixed doubles and Ragna Ingólfsdóttir won womens singles in 2010
Columns: ['Year', 'Mens singles', 'Womens singles', 'Mens doubles', 'Womens doubles', 'Mixed doubles']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1949.0, 'Einar Jónsson', 'no competition', 'Friðrik Sigurbjörnsson Guðjón Einarsson', 'no competition', 'no competition']
SQL:

assistant: SELECT "Womens doubles" FROM "Table" WHERE "Mixed doubles" = 'Magnús Ingi Helgason Tinna Helgadóttir' AND "Womens singles" = 'Ragna Ingólfsdóttir' AND "Year" = 2010.0;