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:
| Club | Location | Manager | Stadium | Capacity | Team captain |
| --- | --- | --- | --- | --- | --- |
| Beroe | Stara Zagora | Ilian Iliev Category:Articles with hCards | Beroe | 17800.0 | Slavi Zhekov |
| Botev | Plovdiv | Enrico Piccioni Category:Articles with hCards | Hristo Botev (Plovdiv) | 21000.0 | Vasil Vasilev |
| Cherno More | Varna | Velizar Popov Category:Articles with hCards | Ticha | 12500.0 | Georgi Iliev |
| Chernomorets | Burgas | Krassimir Balakov Category:Articles with hCards | Lazur | 18037.0 | Cvetomir Conkov |
| CSKA | Sofia | Pavel Dochev Category:Articles with hCards | Bulgarian Army | 22015.0 | Todor Yanchev |
| Levski | Sofia | Georgi Ivanov Category:Articles with hCards | Georgi Asparuhov | 29200.0 | Georgi Petkov |
| Litex | Lovech | Angel Chervenkov Category:Articles with hCards | Gradski Stadion | 7050.0 | Ivelin Popov |
| Lokomotiv Mezdra | Mezdra | Voyn Voynov Category:Articles with hCards | Lokomotiv (Mezdra) | 5000.0 | Strati Iliev |
| Lokomotiv Plovdiv | Plovdiv | Hristo Bonev Category:Articles with hCards | Lokomotiv (Plovdiv) | 13800.0 | Georgi Mechedzhiev |
| Lokomotiv Sofia | Sofia | Dimitar Vasev Category:Articles with hCards | Lokomotiv (Sofia) | 22000.0 | Georgi Markov |
| Minyor | Pernik | Anton Velkov Category:Articles with hCards | Minyor | 12000.0 | Ivaylo Ivanov |
| Montana | Montana | Atanas Dzhambazki Category:Articles with hCards | Ogosta | 8000.0 | Ventsislav Ivanov |
| Sliven 2000 | Sliven | Dragoljub Simonović Category:Articles with hCards | Hadzhi Dimitar | 15000.0 | Miroslav Mindev |
| Pirin | Blagoevgrad | Stefan Grozdanov Category:Articles with hCards | Hristo Botev (Blagoevgrad) | 11000.0 | Georgi Georgiev |
| Slavia | Sofia | Velislav Vutsov Category:Articles with hCards | Ovcha Kupel | 18000.0 | Yordan Petkov |
Question:
Who's the captain of the team whose stadium is Gradski Stadion?
Answer:
Ivelin Popov