user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: What location in Eastern Europe had Old East Slavic as an official language? 
Knowledge Triplets: West Slavic languages, language.language_family.languages, Polabian Language
Second Polish Republic, location.location.containedby, Central Europe
Eastern Europe, book.book_subject.works, A Hole in the Heart of the World: Being Jewish in Eastern Europe
Eastern Europe, common.topic.image, Location-Europe-UNsubregions, Kosovo as part of Serbia
Prut, location.location.containedby, Eastern Europe
South Slavic languages, language.language_family.languages, Macedonian Language
Slavic languages, language.language_family.languages, Ukrainian Language
Knaanic Language, language.human_language.language_family, West Slavic languages
Pomak language, language.human_language.language_family, South Slavic languages
Ukraine, location.country.languages_spoken, Russian Language
Revolution In Eastern Europe, freebase.valuenotation.has_value, People involved
Germanic languages, language.language_family.geographic_distribution, Northern Europe
Old East Slavic, common.topic.article, m.02dmtl
Eastern Europe, location.location.events, Polish–Swedish War
Eastern Europe, common.topic.subject_of, Carnegie Moscow Center
Eastern Europe, location.location.events, Great Patriotic War
Oral, location.location.containedby, Eastern Europe
Slavic languages, language.language_family.languages, Slavonic-Serbian
West Slavic languages, language.language_family.sub_families, Sorbian languages
West Slavic languages, language.language_family.languages, Pannonian Rusyn language
Old Church Slavonic, language.human_language.main_country, Russia
Eastern Europe, location.location.contains, Southern Carpathians
Serbo-Croatian Language, language.human_language.language_family, Slavic languages
Eastern Europe, location.location.events, Great Northern War
West Slavic languages, language.language_family.languages, Knaanic Language
South Slavic languages, language.language_family.languages, Montenegrin language
Montenegrin language, language.human_language.language_family, Slavic languages
South Slavic languages, language.language_family.languages, Slavonic-Serbian
East Slavic languages, language.language_family.geographic_distribution, Eastern Europe
Russian Language, language.human_language.language_family, East Slavic languages
Great Patriotic War, time.event.locations, Eastern Europe
Eastern Europe, location.location.contains, Belarusian Central Council
Eastern Europe, location.location.partially_contains, Kazakhstan
Eastern Europe, location.location.contains, Socialist Federal Republic of Yugoslavia
m.0wg91_v, location.partial_containment_relationship.partially_contained_by, Eastern Europe
Northern Europe, location.location.containedby, Europe
Balkans, location.location.containedby, Europe
West Slavic languages, language.language_family.sub_families, Lechitic languages
Eastern Europe, location.location.partiallycontains, m.0wg91_j
Slavic languages, common.topic.image, Bascanska ploca
South Slavic languages, language.language_family.languages, Serbian language
Silesian Language, language.human_language.language_family, Slavic languages
Slovincian language, language.human_language.language_family, West Slavic languages
Eastern Europe, common.topic.webpage, m.09xgv8w
Russia, location.country.languages_spoken, Ukrainian Language
Belarus, location.country.official_language, Belarusian language
m.09xyt2j, common.webpage.topic, Eastern Europe
Slavic languages, language.language_family.languages, Old Church Slavonic
West Slavic languages, language.language_family.languages, Silesian Language
Eastern Europe, location.location.events, Polish–Soviet War
Georgia, location.location.containedby, Eastern Europe
Slavic languages, language.language_family.languages, Prekmurje Slovene
Burgenland Croatian, language.human_language.language_family, Slavic languages
Eastern Europe, location.location.contains, Caucasus
Eastern Europe, location.location.partially_contains, Akzhaik District
Russian Empire, location.country.official_language, Russian Language
Country, common.topic.notable_types, Kievan Rus'
South Slavic languages, language.language_family.languages, Prekmurje Slovene
Eastern Europe, location.location.contains, Zhanakala District
Socialist Federal Republic of Yugoslavia, location.location.containedby, Eastern Europe
Slavic languages, education.field_of_study.students_majoring, m.0nh3gh2
Eastern Europe, location.location.people_born_here, Vena Kava
Europe, location.location.partially_contains, Russian Empire
West Slavic languages, language.language_family.member_of_language_families, Slavic languages
South Slavic languages, language.language_family.languages, Resian dialect
Eastern Europe, location.location.partially_contains, Atyrau
Official Language, rdf-schema#domain, Country
Eastern Europe, location.location.contains, Kievan Rus'
Eastern Europe, location.location.partially_contains, Atyrau Region
Eastern Europe, location.location.events, Hungarian invasions of Europe
Akzhaik District, location.location.partially_containedby, Eastern Europe
Revolution In Eastern Europe, time.event.locations, Eastern Europe
Slavic languages, language.language_family.languages, Silesian Language
Czech Language, language.human_language.language_family, West Slavic languages
Ukrainian War of Independence, time.event.locations, Eastern Europe
Kurmangazy District, location.location.containedby, Eastern Europe
Eastern Europe, location.location.contains, Kaztal District
East Slavic languages, common.topic.notable_types, Language Family
Old Church Slavonic, language.human_language.region, Europe
Russia, location.country.languages_spoken, Russian Language
m.04z4k94, people.place_lived.location, Eastern Europe
South Slavic languages, language.language_family.languages, Burgenland Croatian
m.09x1bwr, common.webpage.topic, Eastern Europe
Romania, location.country.languages_spoken, Ukrainian Language
Eastern Europe, location.location.partiallycontains, m.0wg91_c
Balto-Slavic languages, language.language_family.geographic_distribution, Eastern Europe
Slavic languages, language.language_family.languages, Slavomolisano dialect
Slavic languages, language.language_family.languages, Knaanic Language
Bulgaria, location.location.containedby, Eastern Europe
Polabian Language, language.human_language.language_family, West Slavic languages
South Slavic languages, language.language_family.languages, Pomak language
Soviet Union, location.location.events, Eastern European anti-Communist insurgencies
Austria-Hungary, location.country.official_language, German Language
Western Europe, location.location.containedby, Europe
East Slavic languages, language.language_family.languages, Rusyn Language
Indo-European languages, common.topic.article, m.03v0m
m.09x6gcq, common.webpage.topic, Eastern Europe
Slavic languages, language.language_family.languages, Middle Polish language
Eastern Front, time.event.locations, Eastern Europe
Eastern Europe, location.location.partiallycontains, m.0wg91_6
Caucasus, location.location.containedby, Eastern Europe
South Slavic languages, language.language_family.languages, Croatian language
Eastern Europe, organization.organization_scope.organizations_with_this_scope, Exclaimer
Eastern Europe, common.topic.webpage, m.09x1bwr
Rusyn Language, language.human_language.language_family, East Slavic languages
Zhanybek District, location.location.containedby, Eastern Europe
Ukrainian Language, language.human_language.language_family, East Slavic languages
Slavic language, language.human_language.language_family, South Slavic languages
Eastern Europe, location.location.contains, Bulgaria
Croatian language, language.human_language.language_family, South Slavic languages
East Slavic languages, common.topic.article, m.02qzp
Slavic languages, common.topic.image, Countries inhabited by West Slavs (in light green)
Eastern Europe, common.topic.image, m.02bk_9p
m.0wg91_6, location.partial_containment_relationship.partially_contained_by, Eastern Europe
Slavic languages, language.language_family.languages, Bosnian language
Bokey Orda District, location.location.containedby, Eastern Europe
West Slavic languages, language.language_family.member_of_language_families, Indo-European languages
Ukraine, location.country.languages_spoken, Ukrainian Language
Eastern Europe, location.location.partiallycontains, m.0wg91_v
Slavic languages, education.field_of_study.students_majoring, m.0gvw93r
Eastern Europe, location.location.contains, Isatay District
Slavic languages, language.language_family.languages, Resian dialect
Eastern Europe, location.location.partially_contains, Makhambet District
South Slavic languages, language.language_family.languages, Banat Bulgarian dialect
Eastern Europe, location.location.contains, Moldova
Eastern Europe, location.location.contains, Rus'
Slavic languages, language.language_family.languages, Burgenland Croatian
Southern Carpathians, location.location.containedby, Eastern Europe
m.0wg9209, location.partial_containment_relationship.partially_contained_by, Eastern Europe
Atyrau, location.location.partially_containedby, Eastern Europe
Eastern Europe, common.topic.webpage, m.09x6gcq
Austria-Hungary, location.country.official_language, Polish Language
Vena Kava, people.person.place_of_birth, Eastern Europe
Northern Europe, location.location.contains, German Empire
Slavic languages, language.language_family.geographic_distribution, Eastern Europe
Central and Eastern Europe, location.location.containedby, Europe
West Slavic languages, common.topic.image, Countries inhabited by West Slavs (in light green)
A Hole in the Heart of the World: Being Jewish in Eastern Europe, common.topic.article, m.0703wwt
Slavonic-Serbian, language.human_language.language_family, South Slavic languages
Balto-Slavic languages, language.language_family.member_of_language_families, Indo-European languages
East Slavic languages, language.language_family.member_of_language_families, Indo-European languages
South Slavic languages, language.language_family.languages, Slavomolisano dialect
Slavic languages, language.language_family.languages, g.122zqd82
South Slavic languages, common.topic.image, Countries inhabited by West Slavs (in light green)
Old East Slavic, language.human_language.language_family, East Slavic languages
Slavic languages, language.language_family.languages, Ruthenian language
Central Europe, location.location.events, Eastern Front
Old East Slavic, language.human_language.language_family, Slavic languages
Second Polish Republic, location.country.languages_spoken, Russian Language
Slavic language, language.human_language.language_family, Indo-European languages
Balto-Slavic languages, language.language_family.sub_families, Slavic languages
Kajkavian dialect, language.human_language.language_family, Slavic languages
Polabian Language, language.human_language.language_family, Slavic languages
Serbian language, language.human_language.language_family, South Slavic languages
Belarus, location.country.official_language, Russian Language
Ukrainian Language, language.human_language.region, Europe
Peremyotnoye, location.location.containedby, Eastern Europe
Eastern European anti-Communist insurgencies, base.culturalevent.event.entity_involved, Hungarian Revolution of 1956
Soviet Union, location.country.languages_spoken, Ukrainian Language
Macedonian Language, language.human_language.language_family, Slavic languages
Eastern Europe, base.ontologies.ontology_instance.equivalent_instances, m.09klpb1
East Slavic languages, language.language_family.languages, g.122np9vd
East Slavic languages, base.schemastaging.context_name.pronunciation, g.125_qt2lw
South Slavic languages, language.language_family.languages, Slovene language
Eastern Europe, location.location.contains, Crimea
East Slavic languages, language.language_family.geographic_distribution, Russia
Europe (UN divisions Eastern, East Central and Southeastern Europe), common.image.size, m.02dv17n
Old East Slavic, location.country.official_language, Kievan Rus'
Kievan Rus', location.location.containedby, Eastern Europe
m.09wgvm6, common.webpage.topic, Eastern Europe
Austria-Hungary, location.country.official_language, Slovene language
East Slavic languages, language.language_family.languages, g.122zqd82
Eastern Europe, location.location.contains, Georgia
Balto-Slavic languages, language.language_family.languages, Lach dialects
North Caucasus, location.location.containedby, Eastern Europe
Slavic languages, language.language_family.languages, Moravian dialects
Kaztal District, location.location.containedby, Eastern Europe
Belarusian language, language.human_language.language_family, East Slavic languages
South Slavic languages, language.language_family.member_of_language_families, Slavic languages
South Slavic languages, language.language_family.geographic_distribution, Bulgaria
Eastern Europe, common.topic.webpage, m.09xf_cx
m.02bk_9p, common.image.appears_in_topic_gallery, Eastern Europe
Eastern Europe, common.topic.notable_for, g.1258n9r3m
Polabian Language, language.human_language.region, Europe
Eastern Europe, location.location.events, Revolution In Eastern Europe
Slavic languages, language.language_family.languages, Kashubian Language
Old Polish language, language.human_language.language_family, Slavic languages
m.09y0w8l, common.webpage.topic, Eastern Europe
m.09wst1h, common.webpage.topic, Eastern Europe
South Slavic languages, language.language_family.languages, Chakavian dialect
Location-Europe-UNsubregions, Kosovo as part of Serbia, common.image.appears_in_topic_gallery, Eastern Europe
Slavic languages, language.language_family.languages, Sorbian, Lower Language
Balto-Slavic languages, common.topic.notable_types, Language Family
Eastern Europe, location.location.events, Tokhtamysh–Timur war
Kievan Rus', location.country.official_language, Old East Slavic
Ukraine, location.location.primarily_containedby, Eastern Europe
Official Language, type.property.schema, Country
Slavic languages, language.language_family.sub_families, Sorbian languages
Balto-Slavic languages, language.language_family.geographic_distribution, Northern Europe
South Slavic languages, language.language_family.languages, Old Church Slavonic
Terekti District, location.location.partially_containedby, Eastern Europe
Indo-European languages, language.language_family.sub_families, East Slavic languages
Second Polish Republic, location.country.official_language, Polish Language
Eastern European anti-Communist insurgencies, common.topic.notable_for, g.1255l1vcg
Kajkavian dialect, language.human_language.language_family, South Slavic languages
m.0wg91_j, location.partial_containment_relationship.partially_contained_by, Eastern Europe
Knaanic Language, language.human_language.language_family, Slavic languages
Slavic languages, language.language_family.sub_families, East Slavic languages
Slavic languages, language.language_family.languages, Macedonian Language
Church Slavonic language, language.human_language.language_family, South Slavic languages
Serbo-Croatian Language, language.human_language.language_family, South Slavic languages
Knaanic Language, language.human_language.region, Europe
Great Northern War, time.event.locations, Eastern Europe
Soviet Union, location.country.official_language, Russian Language
Sorbian, Upper Language, language.human_language.language_family, West Slavic languages
Tsardom of Russia, location.country.official_language, Russian Language
Resian dialect, language.human_language.language_family, South Slavic languages
Eastern Europe, location.location.partially_contains, Terekti District
Revolution In Eastern Europe, freebase.valuenotation.has_value, End date
Kazakhstan, location.country.official_language, Russian Language
Western Europe, location.location.events, Hungarian invasions of Europe
East Slavic languages, language.language_family.languages, Old East Slavic
Eastern Europe, location.location.contains, Galicia
Inder District, location.location.partially_containedby, Eastern Europe
Balkans, location.location.contains, Socialist Federal Republic of Yugoslavia
Old East Slavic, common.topic.image, Izbornik page
Eastern Europe, common.topic.webpage, m.09x5w5d
Lach dialects, language.human_language.language_family, West Slavic languages
Eastern European anti-Communist insurgencies, time.event.locations, Soviet Union
East Slavic languages, language.language_family.languages, Pomor dialects
Tokhtamysh–Timur war, time.event.locations, Eastern Europe
East Slavic languages, language.language_family.languages, Ruthenian language
Eastern Europe, book.book_subject.works, Collision and Collusion: The Strange Case of Western Aid to Eastern Europe, 1989-1998
West Slavic languages, language.language_family.languages, Sorbian, Lower Language
Eastern Europe, common.topic.webpage, m.09y405k
Eastern Europe, common.topic.webpage, m.09xplj_
Eastern Europe, location.location.events, Austro-Russian–Turkish War
Old Polish language, common.topic.notable_types, Human Language
Old Polish language, language.human_language.language_family, West Slavic languages
Ukrainian Language, language.human_language.language_family, Slavic languages
Silesian Language, language.human_language.language_family, West Slavic languages
Pannonian Rusyn language, language.human_language.language_family, West Slavic languages
Polish–Soviet War, time.event.locations, Central Europe
Old East Slavic, language.human_language.main_country, Kievan Rus'
Eastern Europe, common.topic.webpage, m.09wst1h
Belarusian Central Council, location.location.containedby, Eastern Europe
Slavic languages, language.language_family.sub_families, West Slavic languages
Eastern Europe, location.location.contains, Zhanybek District
Slavic languages, language.language_family.languages, g.12dpwmml9
Old East Slavic, base.rosetta.languoid.languoid_class, Language
Austria-Hungary, location.country.official_language, Czech Language
Indo-European languages, common.topic.notable_for, g.1yg57hd5_
Central Europe, location.location.contains, Great Moravia
Zhanakala District, location.location.containedby, Eastern Europe
Makhambet District, location.location.partially_containedby, Eastern Europe
Slavic languages, language.language_family.languages, Serbo-Croatian Language
Austria-Hungary, location.country.official_language, Croatian language
m.01010brs, education.education.major_field_of_study, Slavic languages
m.0105ybrn, award.award_honor.honored_for, Revolution In Eastern Europe
Carnegie Moscow Center, common.topic.subjects, Eastern Europe
Eastern Europe, common.topic.webpage, m.09wgvm6
Slavic languages, language.language_family.languages, Chakavian dialect
Central Europe, location.location.containedby, Europe
Slavic languages, language.language_family.languages, Pomor dialects
Eastern Europe, common.topic.webpage, m.0b464l5
Old East Slavic, common.topic.notable_types, Human Language
Revolution In Eastern Europe, common.topic.notable_for, g.1q56fr7j6
Revolution In Eastern Europe, common.topic.notable_types, Award-Winning Work
East Slavic languages, language.language_family.languages, Russian Language
Moldova, location.location.containedby, Eastern Europe
Sorbian, Lower Language, language.human_language.language_family, West Slavic languages
Isatay District, location.location.containedby, Eastern Europe
Indo-European languages, language.language_family.sub_families, Balto-Slavic languages
Eastern Europe, location.location.contains, Second Polish Republic
Eastern Europe, location.location.partially_contains, Inder District
Zelenov District, location.location.primarily_containedby, Eastern Europe
Kazakhstan, location.country.languages_spoken, Ukrainian Language
Crimea, location.location.containedby, Eastern Europe
m.0wg91_c, location.partial_containment_relationship.partially_contained_by, Eastern Europe
Lechitic languages, language.language_family.geographic_distribution, Central Europe
Slavic languages, base.ontologies.ontology_instance.equivalent_instances, m.09kljwt
Balto-Slavic languages, language.language_family.languages, Proto-Slavic
Slavic languages, common.topic.article, m.06n2b
East Slavic languages, common.topic.image, Countries inhabited by West Slavs (in light green)
Pannonian Rusyn language, language.human_language.language_family, East Slavic languages
m.09y405k, common.webpage.topic, Eastern Europe
Revolution In Eastern Europe, award.award_winning_work.awards_won, m.0105ybrn
Slavomolisano dialect, language.human_language.language_family, South Slavic languages
West Kazakhstan Region, location.location.partially_containedby, Eastern Europe
West Slavic languages, language.language_family.languages, Sorbian, Upper Language
Slavic languages, language.language_family.languages, Proto-Slavic
Kashubian Language, language.human_language.language_family, West Slavic languages
Ukraine, location.country.official_language, Ukrainian Language
Moravian dialects, language.human_language.language_family, West Slavic languages
Sam Borenstein, people.person.place_of_birth, Eastern Europe
Eastern Europe, common.topic.webpage, m.09x_z_s
Slavic languages, common.topic.notable_for, g.1256vgllh
West Slavic languages, language.language_family.languages, Moravian dialects
Eastern Europe, common.topic.webpage, m.09xyt2j
East Slavic languages, language.language_family.member_of_language_families, Slavic languages
Slavic languages, language.language_family.languages, Kajkavian dialect
Eastern Europe, location.location.contains, Bokey Orda District
m.09xgv8w, common.webpage.topic, Eastern Europe
Eastern Europe, location.location.contains, North Caucasus
Old Polish language, language.human_language.language_family, Indo-European languages
Polish Language, language.human_language.region, Europe
Bosnian language, language.human_language.language_family, South Slavic languages
Revolution In Eastern Europe, freebase.valuenotation.is_reviewed, Location(s)
Slavic languages, language.language_family.languages, g.122np9vd
Location-Europe-UNsubregions, Kosovo as part of Serbia, common.image.appears_in_topic_gallery, Northwestern Europe
m.09x5w5d, common.webpage.topic, Eastern Europe
Slavic languages, language.language_family.languages, Serbian language
Old East Slavic, common.topic.notable_for, g.125d7nn9w
Polish Language, language.human_language.language_family, West Slavic languages
German Empire, location.country.official_language, German Language
Czech Language, language.human_language.language_family, Slavic languages
Austro-Russian–Turkish War, time.event.locations, Balkans
Kazakhstan, location.location.partially_containedby, Eastern Europe
Macedonian Language, language.human_language.language_family, South Slavic languages
East Slavic languages, language.language_family.languages, Belarusian language
Eastern Europe, location.location.contains, Taskala District
Slavic language, common.topic.notable_types, Human Language
Eastern Europe, common.topic.webpage, m.09y0w8l
Eastern European anti-Communist insurgencies, common.topic.article, m.0gls5gc
Grand Duchy of Lithuania, location.location.containedby, Eastern Europe
Russia, location.country.languages_spoken, Yiddish Language
Socialist Federal Republic of Yugoslavia, location.location.containedby, Central and Eastern Europe
Balto-Slavic languages, language.language_family.languages, Lithuanian language
m.0b464l5, common.webpage.topic, Eastern Europe
West Slavic languages, common.topic.notable_types, Language Family
Slavic languages, language.language_family.languages, Slavic language
Eastern Europe, location.location.contains, Prut
Slavic languages, language.language_family.sub_families, Lechitic languages
Romania, location.location.containedby, Eastern Europe
Eastern Europe, location.location.partiallycontains, m.0wg9209
Eastern Europe, location.location.partiallycontains, m.0wg9204
Slavic languages, language.language_family.languages, Czech Language
Pomor dialects, language.human_language.language_family, East Slavic languages
Eastern Europe, location.location.events, Ukrainian War of Independence
Old Church Slavonic, language.human_language.language_family, Slavic languages
Slovincian language, language.human_language.language_family, Slavic languages
East Slavic languages, language.language_family.languages, Ukrainian Language
Balto-Slavic languages, language.language_family.languages, g.122zqd82
Slavic languages, language.language_family.languages, Church Slavonic language
Slavic languages, language.language_family.languages, Sorbian, Upper Language
Polabian Language, language.human_language.language_family, Indo-European languages
m.0wg91_p, location.partial_containment_relationship.partially_contained_by, Eastern Europe
Czech Language, language.human_language.region, Europe
Russia, location.country.official_language, Russian Language
Slavic languages, language.language_family.languages, Slovene language
Austro-Russian–Turkish War, time.event.locations, Eastern Europe
Slavic languages, language.language_family.languages, Croatian language
Slavic languages, language.language_family.languages, Pannonian Rusyn language
m.09xf_cx, common.webpage.topic, Eastern Europe
South Slavic languages, language.language_family.languages, Church Slavonic language
Russo-Turkish War, time.event.locations, Eastern Europe
Sorbian languages, language.language_family.member_of_language_families, West Slavic languages
Eastern Europe, location.location.contains, Grand Duchy of Lithuania
Slavic languages, common.topic.notable_types, Language Family
West Slavic languages, language.language_family.languages, Czech Language
Eastern Europe, location.location.partiallycontains, m.0wg91__
Eastern Europe, location.location.events, Austro-Turkish War
Central Europe, location.location.partially_contains, Ukraine
Kingdom of Romania, location.location.containedby, Eastern Europe
Russian Language, language.human_language.region, Eurasia
Macedonian Language, language.human_language.region, Europe
Lechitic languages, language.language_family.member_of_language_families, West Slavic languages
Eastern Europe, location.location.contains, Peremyotnoye
Revolution In Eastern Europe, freebase.valuenotation.has_value, Start date
Slavic languages, language.language_family.languages, Montenegrin language
West Slavic languages, language.language_family.languages, Kashubian Language
Slavic languages, language.language_family.languages, Rusyn Language
Austria-Hungary, location.country.official_language, Serbian language
Rus', location.location.containedby, Eastern Europe
Eastern Europe, location.location.contains, Romania
Slavic languages, language.language_family.member_of_language_families, Balto-Slavic languages
Ruthenian language, language.human_language.language_family, East Slavic languages
Eastern Europe, location.location.events, Eastern Front
Second Polish Republic, location.country.languages_spoken, Ukrainian Language
Eastern Europe, base.schemastaging.context_name.pronunciation, g.125_llnl3
Europe, location.location.partially_contains, Russia
Indo-European languages, language.language_family.sub_families, South Slavic languages
Slavic languages, language.language_family.languages, Slovincian language
Eastern European anti-Communist insurgencies, time.event.locations, Eastern Europe
Slavic languages, language.language_family.languages, Banat Bulgarian dialect
Eastern Europe, location.location.containedby, Kievan Rus'
m.0wg91__, location.partial_containment_relationship.partially_contained_by, Eastern Europe
Second Polish Republic, location.location.containedby, Eastern Europe
South Slavic languages, common.topic.notable_types, Language Family
Northern Europe, location.location.contains, Belarusian Central Council
South Slavic languages, language.language_family.member_of_language_families, Indo-European languages
Indo-European languages, language.language_family.sub_families, Slavic languages
Prekmurje Slovene, language.human_language.language_family, South Slavic languages
Slavic languages, language.language_family.languages, Old Polish language
Eastern Europe, common.topic.webpage, m.09ysrxm
Eastern Europe, common.topic.image, Europe (UN divisions Eastern, East Central and Southeastern Europe)
Slovene language, language.human_language.language_family, South Slavic languages
West Slavic languages, language.language_family.languages, Slovincian language
Galicia, location.location.containedby, Eastern Europe
Central Europe, location.location.events, Polish–Soviet War
West Slavic languages, language.language_family.languages, Old Polish language
Izbornik page, common.image.appears_in_topic_gallery, Old East Slavic
Balkans, location.location.events, Austro-Russian–Turkish War
West Slavic languages, language.language_family.languages, Lach dialects
South Slavic languages, language.language_family.languages, Kajkavian dialect
Slavic languages, language.language_family.languages, Russian Language
m.09ysrxm, common.webpage.topic, Eastern Europe
Second Polish Republic, location.country.languages_spoken, Lithuanian language
Northern Europe, location.location.contains, Swedish Empire
East Slavic languages, language.language_family.languages, Pannonian Rusyn language
Eastern Europe, location.location.contains, Kingdom of Romania
Slovene language, language.human_language.language_family, Slavic languages
Slavic languages, language.language_family.languages, Old East Slavic
Belarusian Central Council, location.country.official_language, German Language
Eastern Europe, location.location.contains, Kresy
Central Europe, location.location.contains, Second Polish Republic
Slavic languages, language.language_family.languages, Lach dialects
Eastern Europe, location.location.contains, Belarusian People's Republic
Eastern Front, time.event.locations, Central Europe
Montenegrin language, language.human_language.language_family, South Slavic languages
Exclaimer, organization.organization.geographic_scope, Eastern Europe
East Slavic languages, common.topic.notable_for, g.125cqdxqq
A Hole in the Heart of the World: Being Jewish in Eastern Europe, common.topic.notable_for, g.12558wp6w
Europe, location.location.partially_contains, Kazakhstan
m.0wg9204, location.partial_containment_relationship.partially_contained_by, Eastern Europe
Eastern Europe, location.location.contains_major_portion_of, Ukraine
South Slavic languages, language.language_family.languages, Serbo-Croatian Language
Austro-Turkish War, time.event.locations, Eastern Europe
Slavic languages, language.language_family.languages, Belarusian language
Croatian language, language.human_language.language_family, Slavic languages
Belarusian People's Republic, location.location.containedby, Eastern Europe
Slavic languages, education.field_of_study.students_majoring, m.0zgvd8z
Eastern Europe, location.location.partially_contains, West Kazakhstan Region
Second Polish Republic, location.country.languages_spoken, German Language
Burgenland Croatian, language.human_language.language_family, South Slavic languages
Atyrau Region, location.location.partially_containedby, Eastern Europe
Balkans, location.location.events, Hungarian invasions of Europe
Belarusian Central Council, location.country.official_language, Belarusian language
West Slavic languages, language.language_family.languages, g.12dpwmml9
Eastern Europe, common.topic.article, m.09b6m
Eastern Europe, location.location.partiallycontains, m.0wg91_p
Taskala District, location.location.containedby, Eastern Europe
South Slavic languages, language.language_family.languages, Slavic language
Central Europe, location.location.events, Ukrainian War of Independence
Kresy, location.location.containedby, Eastern Europe
Slavic language, language.human_language.language_family, Slavic languages
Western Europe, location.location.contains, United Kingdom
Old Church Slavonic, language.human_language.language_family, South Slavic languages
m.09x_z_s, common.webpage.topic, Eastern Europe
Pannonian Rusyn language, language.human_language.language_family, Slavic languages
Slavic languages, language.language_family.geographic_distribution, Slavic World
Slavic languages, language.language_family.sub_families, South Slavic languages
Eastern Europe, location.location.events, Russo-Turkish War
Slavic languages, language.language_family.languages, Polabian Language
Hungarian invasions of Europe, time.event.locations, Eastern Europe
Eastern Europe, location.location.contains, Oral
Central and Eastern Europe, location.location.contains, Socialist Federal Republic of Yugoslavia
Austria-Hungary, location.country.official_language, Ukrainian Language
Central and Eastern Europe, common.topic.notable_types, Region
Northwestern Europe, common.topic.image, Location-Europe-UNsubregions, Kosovo as part of Serbia
Europe (UN divisions Eastern, East Central and Southeastern Europe), common.image.appears_in_topic_gallery, Eastern Europe
West Slavic languages, language.language_family.languages, Polish Language
Slavic languages, education.field_of_study.students_majoring, m.01010brs
A Hole in the Heart of the World: Being Jewish in Eastern Europe, book.written_work.subjects, Eastern Europe
Indo-European languages, common.topic.image, Indo-European languages
Slavic languages, education.field_of_study.students_majoring, m.0w3r5sy
South Slavic languages, language.language_family.languages, Bosnian language
m.09klpb1, base.ontologies.ontology_instance_mapping.freebase_topic, Eastern Europe
Old East Slavic, language.human_language.language_family, Indo-European languages
Eastern Europe, location.location.contains_major_portion_of, Zelenov District
Eastern Europe, location.location.people_born_here, Sam Borenstein
m.09xplj_, common.webpage.topic, Eastern Europe
Eastern Europe, common.topic.notable_types, Location
West Slavic languages, language.language_family.languages, Middle Polish language
Eastern Europe, location.location.containedby, Europe
Indo-European languages, language.language_family.sub_families, West Slavic languages
Eastern Europe, location.location.events, Eastern European anti-Communist insurgencies
Second Polish Republic, location.country.languages_spoken, Belarusian language
Slavic languages, language.language_family.languages, Pomak language
Slavic languages, language.language_family.member_of_language_families, Indo-European languages
Balto-Slavic languages, language.language_family.languages, Russian Language
Polish–Swedish War, time.event.locations, Eastern Europe
Ukraine, location.location.partially_containedby, Central Europe
Eastern Europe, location.location.contains, Kurmangazy District
Polish–Soviet War, time.event.locations, Eastern Europe

Answer: Kievan Rus'