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:
| Nat. | Name | Moving from | Type | Transfer window | Ends | Transfer fee |
| --- | --- | --- | --- | --- | --- | --- |
| MLI | Keita | Sevilla | Transfer | Summer | 2012.0 | €14M |
| ESP | Piqué | Manchester United | Transfer | Summer | 2012.0 | €5M |
| ESP | Pinto | Celta de Vigo | Transfer | Summer | 2010.0 | €0.5M |
| URU | Cáceres | Villarreal | Transfer | Summer | 2012.0 | €16.5M |
| BRA | Dani Alves | Sevilla | Transfer | Summer | 2012.0 | €29M + €6M in variables |
| BLR | Hleb | Arsenal | Transfer | Summer | 2012.0 | €11.8M |
| BRA | Henrique | Palmeiras | Transfer | Summer | 2013.0 | €8M + €2M in variables |
| ESP | Sergio Busquets | Barcelona B | Promote | Summer | 2013.0 | Free |
Question:
What is the transfer window for Hleb?
Answer:
Summer