Question: In what oblast was Victoria Stadnik born?

full_context: Document 1: Anzhela Balakhonova: Anzhela Anatoliyivna Balakhonova (, born December 18, 1972) is a retired female pole vaulter from Ukraine who won the silver medal at the 1999 World Championships in Athletics. She held the European record, and formerly held the world indoor record. She finished 6th at the 2004 Summer Olympics.
Document 2: Carolina Rodríguez: Carolina Rodríguez Ballesteros born (on May 24, 1986 in León, Spain) is a Spanish retired rhythmic gymnast. She is a veteran of the sport of rhythmic gymnastics who started her senior career in the early 2000s. She has competed in three Olympic cycles at the 2004 Athens where she was member of the Spanish Group, at the 2012 London competing as an individual gymnast where she finished 14th in all-around qualifications and at the 2016 Rio competing again as an individual, finishing in 8th in the rhythmic gymnastics individual all-around final.
Document 3: Mexico City: The boroughs are composed by hundreds of colonias or neighborhoods, which have no jurisdictional autonomy or representation. The Historic Center is the oldest part of the city (along with some other, formerly separate colonial towns such as Coyoacán and San Ángel), some of the buildings dating back to the 16th century. Other well-known central neighborhoods include Condesa, known for its Art Deco architecture and its restaurant scene; Colonia Roma, a beaux arts neighborhood and artistic and culinary hot-spot, the Zona Rosa, formerly the center of nightlife and restaurants, now reborn as the center of the LGBT and Korean-Mexican communities; and Tepito and La Lagunilla, known for their local working-class foklore and large flea markets. Santa María la Ribera and San Rafael are the latest neighborhoods of magnificent Porfiriato architecture seeing the first signs of gentrification.
Document 4: Bianka Panova: Bianka Panova (, born May 27, 1970 in Sofia) is a Bulgarian individual rhythmic gymnast. One of the Golden Girls of Bulgaria that dominated rhythmic gymnastics in the 1980s. She is the 1987 World All-around champion, 1989 World All-around silver medalist, 1985 World All-around bronze medallist and 1986 European All-around champion. She won a total of nine World Championship gold medals.
Document 5: Stas Mikhaylov: Stanislav Vladimirovich Mikhaylov (), better known as Stas Mikhaylov (, born 27 April 1969 in Sochi, Russia) is a popular Russian singer and songwriter, Meritorious Artist of the Russian Federation (2010); laureate of Golden Gramophone Award. Stas Mikhaylov reported the highest income of all singers in Russia in 2011 with $20 million and 2012 with $21 million
Document 6: Alena Vinnitskaya: Alena Vinnitskaya ( "Aliona Vinnytska"; born Olha Viktorivna Vinnytska () on 27 December 1974, Kiev, in the Ukrainian SSR of the Soviet Union – in present-day Ukraine) is a Ukrainian singer. She is an author and performer.
Document 7: Donetsk Oblast: Donetsk Oblast is located in southeastern Ukraine. The area of the oblast (26,517 km²), comprises about 4.4% of the total area of the country. The oblast borders the Dnipropetrovsk and Zaporizhia Oblasts on the southwest, the Kharkiv Oblast on the north, the Luhansk Oblast on the northeast, the Rostov Oblast in Russia on the east, and with the Sea of Azov on the south.
Document 8: Victoria Stadnik: Victoria Stadnik (born 25 November 1979 in Odessa, USSR) is an Individual Rhythmic Gymnast who competed at the 1995 and 1996 World Rhythmic Gymnastics Championships.
Document 9: Bukovina: A region of Moldavia during the Middle Ages, the territory of what became known as Bukovina was, from 1774 to 1918, an administrative division of the Habsburg Monarchy, the Austrian Empire, and Austria-Hungary. After World War I, Romania established its control over Bukovina. In 1940, the northern half of Bukovina was annexed by the Soviet Union in violation of the Molotov–Ribbentrop Pact, and currently is part of Ukraine.
Document 10: Alina Stănculescu: Alina Stănculescu (born April 29, 1990) is a retired Romanian artistic gymnast. She is a silver European medalist with the team. She was a successful junior gymnast winning gold on beam and silver with the team at the 2004 Junior European Championships.
Document 11: Age requirements in gymnastics: In the latter half of the 20th century, a series of controversies arose with regard to gymnast ages, some of them leading to sanctions by FIG, and paving the way for the age requirements to be raised from 14 to 15 in 1981, and then to 16 in 1997.
Document 12: The Odessa Tales: The Odessa Tales (Russian: Одесские рассказы) is a collection of short stories by Isaac Babel, situated in Odessa in the last days of the Russian empire and the Russian Revolution. Published individually in magazines throughout 1923 and 1924 and collected into a book in 1931, they deal primarily with a group of Jewish thugs that live in the Moldavanka, a ghetto of Odessa. Their leader is Benya Krik, known as the King.
Document 13: Odessa Oblast: Odessa Oblast (also known as Odesa Oblast; , "Odes’ka oblast’", , "Odesskaya oblast’") is an oblast (province) of southwestern Ukraine, located along the northern coast of the Black Sea. Its administrative center is the city of Odessa ().
Document 14: Moldavian Soviet Socialist Republic: Moldavian Soviet Socialist Republic (shortly: Moldavian SSR, abbr.: MSSR; Romanian: Republica Sovietică Socialistă Moldovenească, in Cyrillic alphabet: Република Советикэ Сочиалистэ Молдовеняскэ; Russian: Молда́вская Сове́тская Социалисти́ческая Респу́блика Moldavskaya Sovetskaya Sotsialisticheskaya Respublika), also known to as Soviet Moldavia or Soviet Moldova, was one of the fifteen republics of the Soviet Union existed from 1940 to 1991. The republic was formed on 2 August 1940 from parts of Bessarabia, a region annexed from Romania on 28 June of that year, and parts of the MASSR, an autonomous republic within the Ukrainian SSR.
Document 15: Moldavanka: Moldavanka is a historical part of Odessa in the Odessa Oblast (province) of southern Ukraine, located jointly on Malinovskiy and Primorskiy city districts. Before 1820 a settlement just outside Odessa which later engulfed it. Until the 20th century the neighborhood was considered a low-income/high-crime part of the town and was famous for its workers' shacks.
ground_truth: Odessa Oblast
sub_queries: Victoria Stadnik >> place of birth Answer: Odessa
Odessa >> located in the administrative territorial entity Answer: Odessa Oblast