Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Name | Country | Type | Moving from | Transfer window | Ends | Transfer fee | Source |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Codina | ESP | Promoted | Youth system | Summer | 2010.0 | Youth system | Realmadrid |
| Torres | ESP | Promoted | Youth system | Summer | 2012.0 | Youth system | Realmadrid |
| Agus | ESP | Promoted | Youth system | Summer | 2010.0 | Youth system | Realmadrid |
| Granero | ESP | Promoted | Youth system | Summer | 2011.0 | Youth system | Realmadrid |
| de la Red | ESP | Promoted | Youth system | Summer | 2011.0 | Youth system | Realmadrid |
| Adrián | ESP | Promoted | Youth system | Summer | 2011.0 | Youth system | Realmadrid |
| Soldado | ESP | Loan return | Osasuna | Summer | 2012.0 | N/A | Realmadrid |
| Baptista | BRA | Loan return | Arsenal | Summer | 2010.0 | N/A | Realmadrid |
| Balboa | EQG | Loan Return | RacingSantander | Summer | 2012.0 | N/A | Realmadrid |
| Robben | NED | Signed | Chelsea | Summer | 2012.0 | € 36M | Realmadrid |
| Pepe | POR | Signed | Porto | Summer | 2012.0 | € 30M | Realmadrid |
| Sneijder | NED | Signed | Ajax | Summer | 2012.0 | € 27M | Realmadrid |
| Drenthe | NED | Signed | Feyenoord | Summer | 2012.0 | € 14M | Realmadrid |
| Heinze | ARG | Signed | Manchester United | Summer | 2011.0 | € 12M | Realmadrid |
| Saviola | ARG | Signed | Barcelona | Summer | 2011.0 | Free | Realmadrid |
| Metzelder | GER | Signed | Borussia Dortmund | Summer | 2010.0 | Free | Realmadrid |
| Dudek | POL | Signed | Liverpool | Summer | 2009.0 | Free | Realmadrid |
| Adrián | ESP | Loan Return | Celta de Vigo | Winter | 2011.0 | N/A | Realmadrid |
Question:
Which transfer window was moving from borussia dortmund?
Answer:
Summer