user
Instruction
Answer the question based on the provided table.


Table
Table Title: '' regarding 'List of Commanders of the Turkish Naval Forces'
Table Content:
| No. | Commander | Picture | Took office | Left office |
| --- | --- | --- | --- | --- |
| 1 | Admiral Mehmet Ali Ülgen | - | 1 July 1949 | 6 June 1950 |
| 2 | Admiral Sadık Altıncan | - | 13 June 1950 | 12 September 1957 |
| 3 | Admiral Fahri Korutürk | - | 12 September 1957 | 2 July 1960 |
| 4 | Vice admiral Ahmet Zeki Özak | - | 2 July 1960 | 20 June 1961 |
| 5 | Admiral Necdet Uran | - | 20 June 1961 | 16 August 1968 |
| 6 | Admiral Celal Eyiceoğlu | - | 16 August 1968 | 30 August 1972 |
| 7 | Admiral Kemal Kayacan | - | 30 August 1972 | 23 August 1974 |
| 8 | Admiral Hilmi Fırat | - | 23 August 1974 | 9 August 1977 |
| 9 | Admiral Bülent Ulusu | - | 9 August 1977 | 10 August 1980 |
| 10 | Admiral Nejat Tümer | - | 10 August 1980 | 6 December 1983 |
| 11 | Admiral Zahit Atakan | - | 6 December 1983 | 22 August 1986 |
| 12 | Admiral Emin Göksan | - | 22 August 1986 | 22 August 1988 |
| 13 | Admiral Orhan Karabulut | - | 22 August 1988 | 20 August 1990 |
| 14 | Admiral İrfan Tınaz | - | 20 August 1990 | 20 August 1992 |
| 15 | Admiral Vural Beyazıt | - | 20 August 1992 | 18 August 1995 |
| 16 | Admiral Güven Erkaya | - | 18 August 1995 | 29 August 1997 |
| 17 | Admiral Salim Dervişoğlu | - | 29 August 1997 | 26 August 1999 |
| 18 | Admiral İlhami Erdil | - | 26 August 1999 | 24 August 2001 |
| 19 | Admiral Bülent Alpkaya | - | 24 August 2001 | 28 August 2003 |
| 20 | Admiral Özden Örnek | - | 28 August 2003 | 26 August 2005 |
| 21 | Admiral Yener Karahanoğlu | - | 26 August 2005 | 24 August 2007 |
| 22 | Admiral Metin Ataç | - | 24 August 2007 | 30 August 2009 |
| 23 | Admiral Eşref Uğur Yiğit | - | 30 August 2009 | 29 July 2011 |
| 24 | Admiral Emin Murat Bilgel | - | 4 August 2011 | 23 August 2013 |
| 25 | Admiral Bülent Bostanoğlu | - | 23 August 2013 | 22 August 2017 |
| 26 | Admiral Adnan Özbal | - | 22 August 2017 | Incumbent |


Question
Who is Bülent Bostanoğlu?


Answer Format
The final answer should be a sentence and use the following format:
```json
{
    "answer": "your_generated_sentence_here"
}
```
rule
["Bülent Bostanoğlu served as the 25th Commander of the Turkish Naval Forces."]