Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Who won womens doubles the year magnús ingi helgason tinna helgadóttir won mixed doubles and ragna ingólfsdóttir won womens singles in 2010

### Inputs:
table_name: table, columns: ['Year', 'Mens singles', 'Womens singles', 'Mens doubles', 'Womens doubles', 'Mixed doubles']

### Response:
SELECT Womens doubles FROM table WHERE Mixed doubles = Magnús Ingi Helgason Tinna Helgadóttir AND Womens singles = Ragna Ingólfsdóttir AND Year = 2010