Question: What is the capital of the province where Tashtun is located?

full_context: Document 1: Okhtar: Okhtar () is a village and rural community (municipality) in the Syunik Province of Armenia. The National Statistical Service of the Republic of Armenia (ARMSTAT) reported its population was 87 in 2010, down from 124 at the 2001 census.
Document 2: Kapan: Kapan () is a town at the southeast of Armenia, serving as the administrative centre of the urban community of Kapan as well as the provincial capital of Syunik Province. It is located in the valley of the Voghji River, on the northern slopes of Mount Khustup. According to the 2011 census, the population of Kapan is 43,190, slightly declined from 45,711 in the 2001 census. Kapan is the most populous town in the Syunik Province and the entire region of southern Armenia. However, the current population of the town is around 34,600 as per the 2016 official estimate.
Document 3: Mutsk: Mutsk (, also Romanized as Muts’k’ and Mutsq; formerly, Mazra, Bartsravan, and Bardzravan, Azerbaijani : Bashkand ) is a village and rural community (municipality) in the Syunik Province of Armenia. The National Statistical Service of the Republic of Armenia (ARMSTAT) reported its population was 375 in 2010, down from 376 at the 2001 census.
Document 4: Khdrants: Khdrants (, also Romanized as Khdrants’, Khndrants’, and Khtrants’; also, Khdran, Khndrats’i, and Khotorants’; formerly, Sirkatag, Sirbat’as, Surbyadag, Sirkat’as, and Tsakghadzor) is a village and rural community (municipality) in the Syunik Province of Armenia. The National Statistical Service of the Republic of Armenia (ARMSTAT) reported its population as 55 in 2010, down from 68 at the 2001 census.
Document 5: Aghvani: Aghvani (, also Romanized as Agvani; formerly, Khoghvani) is a village and rural community (municipality) in the Syunik Province of Armenia. The National Statistical Service of the Republic of Armenia (ARMSTAT) reported Agarak's population as 88 in 2010, down from 138 at the 2001 census.
Document 6: Artashat, Armenia: Artashat (), is a town and urban municipal community in Armenia serving as the administrative centre of Ararat Province. It is located on the Araks River in the Ararat plain, 30 km southeast of Yerevan. Artashat was founded in 1945 by the Soviet government of Armenia and named after the nearby ancient city of Artashat.
Document 7: Tashtun: Tashtun () is a village and rural community (municipality) in the Syunik Province of Armenia. The National Statistical Service of the Republic of Armenia (ARMSTAT) reported its population was 134 in 2010, down from 170 at the 2001 census.
Document 8: Tandzaver: Tandzaver () is a village and rural community (municipality) in the Syunik Province of Armenia. The National Statistical Service of the Republic of Armenia (ARMSTAT) reported its population was 212 in 2010, down from 263 at the 2001 census.
Document 9: Sarnakunk: Sarnakunk (, also Romanized as Sarrnakunk’, Sarnakunq, Sarrnakunk; formerly, Saybalu) is a village and rural community (municipality) in the Syunik Province of Armenia. The National Statistical Service of the Republic of Armenia (ARMSTAT) reported its population was 519 in 2010, up from 514 at the 2001 census.
Document 10: Kaghnut: Kaghnut (, also Romanized as Kakhnut and Kagnut; formerly, Mogez, Moges, Moqez, and Moghes) is a village and rural community (municipality) in the Syunik Province of Armenia. The National Statistical Service of the Republic of Armenia (ARMSTAT) reported its population as 11 in 2011, down from 109 in 2010, down from 117 at the 2001 census.
Document 11: Ashotavan: Ashotavan (; formerly, Aghk’end, T’azak’end, Khnok, and Kirakosik) is a village and rural community (municipality) in the Syunik Province of Armenia. The National Statistical Service of the Republic of Armenia (ARMSTAT) reported its population as 647 in 2010, up from 623 at the 2001 census.
Document 12: Aran, Aghjabadi: Aran (known as Kuybishev until 1999) is a village and municipality in the Aghjabadi Rayon of Azerbaijan. It has a population of 1,655.
Document 13: Hartashen, Syunik: Hartashen (, also Romanized as Hart’ashen, Artashe, and Artashen; formerly, Aigedzor, Azatashen-Alighuli, Këru, At’ghunk’, Alikulik’yand, Last, Alighulashen, Alighuli Ashaghy, and Dzorashen) is a village and rural community (municipality) in the Syunik Province of Armenia. The National Statistical Service of the Republic of Armenia (ARMSTAT) reported its population was 717 in 2010, up from 662 at the 2001 census.
Document 14: Artsvanik: Artsvanik (, formerly, Yeritsvanik, Yeritsvank’, Yertsu Vank’, Karmir Vank’, Yerets’, Yerets and Yeretsvanik) is a village and rural community (municipality) in the Syunik Province of Armenia. The National Statistical Service of the Republic of Armenia (ARMSTAT) reported its population as 578 in 2010, down from 652 at the 2001 census.
Document 15: Kuris, Armenia: Kuris () is a village and rural community (municipality) in the Syunik Province of Armenia. The National Statistical Service of the Republic of Armenia (ARMSTAT) reported its population was 61 in 2010, down from 112 at the 2001 census. The inhabitants speak the dialect of Kakavaberd.
ground_truth: Kapan
sub_queries: Tashtun >> located in the administrative territorial entity Answer: Syunik Province
Syunik Province >> capital Answer: Kapan