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:
| Province | Largest city | 2nd Largest | 3rd Largest | 4th largest |
| --- | --- | --- | --- | --- |
| Tehran | Tehran | Eslamshahr | Golestan | Shahr-e Qods |
| Alborz | Karaj | Nazarabad | Savojbolagh | Taleghan |
| Razavi Khorasan | Mashhad | Sabzevar | Neyshabur | Torbat-e Heydarieh |
| Isfahan | Isfahan | Kashan | Khomeynishahr | Najafabad |
| Fars | Shiraz | Marvdasht | Jahrom | Fasa |
| Khuzestan | Ahvaz | Dezful | Abadan | Khorramshahr |
| East Azarbaijan | Tabriz | Maragheh | Marand | Mianeh |
| Mazandaran | Sari | Babol | Amol | Qa'em Shahr |
| West Azarbaijan | Urmia | Khoy | Miandoab | Salmas |
| Kerman | Kerman | Sirjan | Rafsanjan | Jiroft |
| Gilan | Rasht | Bandar-e Anzali | Lahijan | Langrud |
| Sistan and Baluchistan | Zahedan | Zabol | Iran Shahr | Chabahar |
| Kermanshah | Kermanshah | Eslamabad-e Gharb | Harsin | Kangavar |
| Lorestan | Khorramabad | Borujerd | Dorood | Koohdasht |
| Hamadan | Hamadan | Malayer | Nahavand | Asadabad |
| Golestan | Gorgan | Gonbad-e Qabus | Ali Abad | Bandar Torkaman |
| Kurdistan | Sanandaj | Saghez | Marivan | Baneh |
| Hormozgan | Bandar Abbas | Minab | Dehbarez | Bandar Lengeh |
| Markazi | Arak | Saveh | Khomein | Mahallat |
| Ardabil | Ardabil | Parsabad | Meshkinshahr | Khalkhal |
| Qazvin | Qazvin | Takestan | Alvand | Eqbaliyeh |
| Qom | Qom | Jamkaran | Qanavat | Jafariyeh |
| Yazd | Yazd | Meybod | Ardakan | Bafq |
| Zanjan | Zanjan | Abhar | Khorramdareh | Qidar |
| Bushehr | Bushehr | Borazjan | Bandar Ganaveh | Khormuj |
| Chahar Mahaal and Bakhtiari | Shahr-e Kord | Borujen | Farrokhshahr | Farsan |
| North Khorasan | Bojnurd | Shirvan | Esfarayen | Garmeh Jajarm |
| Kohgiluyeh and Boyer-Ahmad Province | Yasuj | Dogonbadan | Dehdasht | Likak |
| South Khorasan | Birjand | Ghayen | Ferdows | Nehbandan |
| Semnān | Shahrood | Semnan | Damghan | Garmsar |
| Ilam | Ilam | Eyvan | Dehloran | Abdanan |
Question:
What province has the largest city of Birjand?
Answer:
South Khorasan