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: where does volga river start? 
Knowledge Triplets: m.07nh6v1, base.ontologies.ontology_instance_mapping.freebase_topic, Volga River
Volga River, location.location.containedby, Europe
Onon River, geography.river.basin_countries, Russia
Ishim River, geography.river.basin_countries, Kazakhstan
Belarus, location.location.partially_contains, Iput River
Onon River, location.location.containedby, Asia
Shishged River, common.topic.notable_types, River
m.0wg8wmt, location.partial_containment_relationship.partially_contains, Yenisei River
Kura River, location.location.containedby, Europe
Asia, location.location.partially_contains, Kodori River
Magadan Oblast, location.location.partially_contains, Kolyma River
Hrazdan River, location.location.partially_contained_by, m.0wg8lbs
Georgia, location.location.partially_contains, Kodori River
Russia, location.location.adjoin_s, m.02xw90z
Russia, location.location.partially_contains, Selenga River
Amur River, common.topic.notable_types, River
Psel River, location.location.partially_contained_by, m.0wg8wgf
Russia, location.location.partiallycontains, m.0wkd_gg
Psel River, location.location.partially_containedby, Ukraine
Russia, location.location.partiallycontains, m.0wg8wpc
Emba River, location.location.containedby, Kazakhstan
Tes River, location.location.partially_contained_by, m.0wg8wr7
River, freebase.type_profile.strict_included_types, Geographical Feature
River, type.type.properties, Origin Elevation
Russia, location.location.partially_contains, Curonian Spit
Menza River, location.location.containedby, Asia
Astrakhan River College, location.location.containedby, Russia
Russia, location.location.adjoin_s, m.02xw90r
Nizhny Novgorod, location.location.containedby, Russia
m.0wjpmtc, location.partial_containment_relationship.partially_contains, Shishged River
Aragvi River, location.location.partially_contained_by, m.0wg8lby
Terek River, location.location.partially_containedby, Georgia
Vorskla River, geography.river.origin, Ukraine
Asia, location.location.partially_contains, Russia
Volga River, geography.river.origin, Valdai Hills
Russia, location.location.partially_contains, Tikhtengen
Ural River, location.location.partially_containedby, Asia
Origin, type.property.schema, River
Onon River, common.topic.notable_types, River
River, type.type.properties, Cities
Russia, location.location.partially_contains, Tes River
m.09y5nq5, common.webpage.topic, Russia
m.0b4863d, common.webpage.topic, Russia
Tikhtengen, location.location.partially_containedby, Russia
Oskol River, common.topic.notable_types, River
m.0wg8lb9, location.partial_containment_relationship.partially_contains, Emba River
Russia, location.location.partiallycontains, m.0wg8wr7
m.0b6r_v0, common.webpage.topic, Russia
Psel River, geography.river.basin_countries, Ukraine
Emba River, common.topic.notable_types, River
Russia, location.statistical_region.time_required_to_start_a_business, g.1hhc3w084
m.0wg8ldl, location.partial_containment_relationship.partially_contains, Ural River
Russia, location.location.partially_contains, Neman
Russia, location.location.partially_contains, g.1235dxm_
River, base.schemastaging.context_name.pronunciation, g.125_qh99h
Oskol River, geography.river.basin_countries, Russia
Volga in Yaroslavl (autumn morning), common.image.appears_in_topic_gallery, Volga River
Ural River, geography.river.basin_countries, Kazakhstan
Russia, location.location.partially_contains, Little Yenisei River
Mouth, rdf-schema#domain, River
Russia, location.location.events, g.12mkyz02t
m.0wg8lc7, location.partial_containment_relationship.partially_contains, Psou River
River, type.type.properties, Mouth (long./lat./elev.)
m.09x3m7w, common.webpage.topic, Russia
Novgorod Oblast, location.location.containedby, Russia
Iput River, location.location.containedby, Europe
Kazakhstan, location.location.partially_contains, Ishim River
Psou River, location.location.partially_contained_by, m.0wg8lc7
Lovat River, location.location.containedby, Europe
River, freebase.type_profile.published, Published
Russia, location.location.partiallycontains, m.0wjpn7r
River, common.topic.article, m.06cn_
Irtysh River, geography.river.basin_countries, Kazakhstan
Volga River, common.topic.image, none The Volga at Ulyanovsk
Asia, location.location.partially_contains, Hrazdan River
Samur River, location.location.partially_contained_by, m.0wg8lbg
Volga River, geography.river.cities, Kazan
Ukraine, location.location.partially_contains, Oskol River
Caucasus Mountains, location.location.partially_containedby, Russia
Psou River, location.location.partially_contained_by, m.0wg8wj5
Russia, location.location.partiallycontains, m.0wg8wdt
Russia, location.location.partially_contains, Terek River
Psou River, location.location.partially_containedby, Europe
Russia, location.location.partially_contains, Samur River
Volga River, geography.river.origin, Valdai Hills
Kodori River, geography.river.mouth, Black Sea
Kura River, location.location.partially_containedby, Azerbaijan
Astrakhan River College, location.location.containedby, Astrakhan
Lovat River, location.location.partially_contained_by, m.0wg8wfz
Menza River, location.location.partially_containedby, Russia
Russia, location.location.partiallycontains, m.0wg8wqg
Ilek River, location.location.partially_contained_by, m.0wg8wmn
Tatarstan, location.location.containedby, Russia
Terek River, geography.river.mouth, Caspian Sea
Greater Caucasus, location.location.partially_containedby, Russia
Europe, location.location.partially_contains, Psou River
Russia, common.topic.webpage, m.02n9g15
Amur River, geography.river.basin_countries, Russia
Kodori River, location.location.partially_containedby, Europe
Russia, location.location.partiallycontains, m.0wg8wdz
Vorskla River, common.topic.notable_types, River
m.0wg8l4g, location.partial_containment_relationship.partially_contains, Russia
Russia, common.topic.webpage, m.09x3m7w
Vorskla River, location.location.partially_containedby, Russia
Kolyma River, common.topic.notable_types, River
Kodori River, location.location.partially_containedby, Asia
Russia, location.location.partially_contains, Tavan Bogd
Terek River, geography.river.basin_countries, Russia
m.0wg8kyx, location.partial_containment_relationship.partially_contains, Russia
Curonian Spit, location.location.partially_containedby, Russia
Emba River, location.location.partially_contained_by, m.0wg8lb9
River, type.type.properties, Basin area
Greater Caucasus, location.location.partially_containedby, Azerbaijan
Samur River, common.topic.notable_types, River
Russia, location.location.partially_contains, Psou River
River, type.type.properties, Mouth Elevation
Georgia, location.location.partially_contains, Psou River
Psel River, common.topic.notable_types, River
m.0jkldkv, location.adjoining_relationship.adjoins, Russia
Samur River, location.location.partially_containedby, Asia
Kineshma Bridge, transportation.bridge.body_of_water_spanned, Volga River
m.0wg8whk, location.partial_containment_relationship.partially_contains, Iput River
River, common.topic.article, m.021y5gc
Russia, location.location.partiallycontains, m.0wg8wf8
River, geography.geographical_feature_category.subcategories, Subterranean river
Russia, location.location.partiallycontains, m.0wp5qq7
Russia, location.location.partially_contains, Tebulosmta
Oskol River, geography.river.basin_countries, Ukraine
m.0wg8wnr, location.partial_containment_relationship.partially_contains, Selenga River
Vorskla River, location.location.containedby, Europe
m.02xw902, location.adjoining_relationship.adjoins, Russia
Russia, location.location.partiallycontains, m.0wg8wkr
Russia, location.location.partially_contained_by, m.0wg8l4g
Russia, location.location.partially_contained_by, m.0wg9h89
m.05g_64l, location.adjoining_relationship.adjoins, Russia
Engels-2, location.location.containedby, Russia
Ural River, location.location.partially_contained_by, m.0wg8wqg
Astrakhan River College, location.location.containedby, Europe
Amur River, geography.river.origin, Onon River
Caspian Sea, geography.lake.inflow, Volga River
Tartar, geography.river.basin_countries, Azerbaijan
Neman, geography.river.basin_countries, Russia
Lovat River, location.location.partially_containedby, Belarus
Russia, location.location.partially_contains, Amur River
Asia, location.location.partially_contains, Samur River
Europe, location.location.partially_contains, Hrazdan River
Europe, location.location.partially_contains, Kodori River
Little Yenisei River, location.location.partially_containedby, Russia
River, geography.geographical_feature_category.subcategories, Entrenched river
Little Yenisei River, common.topic.notable_types, River
Kura River, geography.river.basin_countries, Turkey
Russia, common.topic.webpage, m.0b46k4c
Psou River, geography.river.origin, Greater Caucasus
Russia, location.location.partiallycontains, m.0wg8wdn
Russia, location.location.adjoin_s, m.05sspv0
Russia, location.location.partiallycontains, m.0wg8wb7
m.0wg8wj5, location.partial_containment_relationship.partially_contains, Psou River
Kazakhstan, location.location.partially_contains, Ilek River
m.0wg8lby, location.partial_containment_relationship.partially_contains, Aragvi River
Russia, location.location.partiallycontains, m.0wg8wgx
Russia, location.location.adjoin_s, m.02xw902
Iput River, geography.river.basin_countries, Belarus
Russia, location.location.adjoin_s, m.030r6dc
River, common.topic.webpage, m.0b4618w
Terek River, location.location.partially_contained_by, m.0wg8wj0
River, type.type.properties, Origin (long./lat./elev.)
m.0b4618w, common.webpage.topic, River
Europe, location.location.partially_contains, Ural River
North Ossetia-Alania, location.location.containedby, Russia
Vorotan, geography.river.basin_countries, Armenia
Psou River, geography.river.mouth, Black Sea
River, type.type.properties, Basin countries
Russia, location.location.adjoin_s, m.02xw909
Russia, location.location.partially_contains, Šešupė
m.0wg8wg3, location.partial_containment_relationship.partially_contains, Samur River
m.0wg8wr7, location.partial_containment_relationship.partially_contains, Tes River
Kazakhstan, location.location.partially_contains, Irtysh River
Amur River, location.location.partially_contained_by, m.0wg8wkr
m.0wg8wqg, location.partial_containment_relationship.partially_contains, Ural River
Volga River, geography.river.basin_countries, Russia
Shishged River, location.location.partially_containedby, Russia
Russia, location.location.partiallycontains, m.0wg8wmn
Russia, location.location.partially_contains, Dzhangi-Tau
m.02xw909, location.adjoining_relationship.adjoins, Russia
Volga River, geography.body_of_water.bridges, Kineshma Bridge
Russia, location.location.partiallycontains, m.0wg8wgl
Lazurnie Nebesa, location.location.containedby, Russia
Russia, location.location.partiallycontains, m.0wjpn86
Volga River, location.location.containedby, Russia
Oskol River, location.location.partially_contained_by, m.0wr4pc8
Russia, location.location.partially_contains, Lieksanjoki
Vorskla River, location.location.partially_contained_by, m.0wg8wh1
Amu Darya, geography.river.basin_countries, Uzbekistan
Russia, location.location.partially_contains, Shishged River
Russia, location.statistical_region.time_required_to_start_a_business, g.1hhc3xt6t
Volga River, common.topic.image, Volga in Yaroslavl (autumn morning)
Volga River, geography.body_of_water.bridges, Saratov Bridge
Irtysh River, location.location.containedby, Asia
Irtysh River, common.topic.notable_types, River
Psel River, location.location.containedby, Europe
River, freebase.type_hints.included_types, Topic
Russia, location.location.partiallycontains, m.0wg8wp_
Russia, location.location.partiallycontains, m.0wg8wg3
Russia, location.location.partially_contains, Vorskla River
Russia, location.location.partiallycontains, m.0wg8wnx
m.030r6dc, location.adjoining_relationship.adjoins, Russia
Hrazdan River, common.topic.notable_types, River
Russia, location.location.partially_contains, Irtysh River
Amur River, location.location.partially_containedby, Russia
m.0wg8lbs, location.partial_containment_relationship.partially_contains, Hrazdan River
Yenisei River, common.topic.notable_types, River
Hrazdan River, geography.river.basin_countries, Armenia
Russia, location.location.partially_contains, Jangi-Tau-East Peak
Iput River, location.location.partially_containedby, Smolensk Oblast
Neman, geography.river.basin_countries, Belarus
Russia, location.country.administrative_divisions, Volga Federal District
Selenga River, location.location.partially_containedby, Russia
Russia, location.location.partiallycontains, m.0wzlvzh
Shishged River, location.location.partially_contained_by, m.0wjpmtc
Iput River, location.location.partially_contained_by, m.0wg8whk
Yenisei River, location.location.containedby, Asia
Terek River, common.topic.notable_types, River
Little Yenisei River, geography.river.basin_countries, Russia
Russia, location.location.partiallycontains, m.0wg8wbx
Ishim River, common.topic.notable_types, River
Russia, location.location.partially_contains, Lutto
Ishim River, location.location.partially_containedby, Russia
Russia, location.location.partiallycontains, m.0wg8wh1
Yenisei River, location.location.partially_contained_by, m.0wg8wmt
Šešupė, geography.river.mouth, Neman
Russia, location.statistical_region.time_required_to_start_a_business, g.11b6nwh3bd
m.0wr4pc8, location.partial_containment_relationship.partially_contains, Oskol River
Iput River, common.topic.notable_types, River
Russia, location.location.partiallycontains, m.0wg8whk
River, type.type.properties, Mouth
Kura River, geography.river.basin_countries, Georgia
Russia, location.location.adjoin_s, m.05gq4vn
Russia, location.location.partiallycontains, m.0wg8wdh
Russia, location.location.partiallycontains, m.0wg8wff
Russia, location.location.partially_contains, Piusa
Volga River, location.location.events, Syzran–Samara Operation
Ilek River, location.location.partially_containedby, Russia
Aragvi River, common.topic.notable_types, River
Alazani, geography.river.basin_countries, Azerbaijan
Russia, location.location.partiallycontains, m.0wg8wgf
River, freebase.type_profile.strict_included_types, Location
m.0wg8wfz, location.partial_containment_relationship.partially_contains, Lovat River
Psou River, common.topic.notable_types, River
Ilek River, geography.river.basin_countries, Kazakhstan
Russia, location.location.partiallycontains, m.0wg8wfz
Vorskla River, geography.river.origin, Belgorod Oblast
Kolyma River, location.location.partially_containedby, Magadan Oblast
m.0b48cnz, common.webpage.topic, Russia
Asia, location.location.partially_contains, Ural River
m.0wg8lbg, location.partial_containment_relationship.partially_contains, Samur River
Menza River, common.topic.notable_types, River
River, freebase.type_profile.kind, Definition
Tes River, location.location.containedby, Asia
Russian Empire, location.location.partially_containedby, Asia
Lutto, geography.river.basin_countries, Finland
Shishged River, location.location.containedby, Asia
Psou River, geography.river.basin_countries, Georgia
Volga River, geography.river.cities, Astrakhan
Russia, location.location.partiallycontains, m.0wg8wk3
Onon River, location.location.partially_contained_by, m.0wp5qq7
m.0wg8wj0, location.partial_containment_relationship.partially_contains, Terek River
Yenisei River, location.location.partially_containedby, Russia
Russia, location.location.partiallycontains, m.0wr4pc8
Russia, location.location.partiallycontains, m.0wkjtzy
Lovat River, common.topic.notable_types, River
Russia, location.location.partiallycontains, m.0wg8wj5
Tes River, location.location.partially_containedby, Russia
Emba River, location.location.partially_containedby, Europe
Kura River, geography.river.basin_countries, Iran
Volga Federal District, location.administrative_division.country, Russia
Iput River, location.location.partially_containedby, Russia
Kura River, geography.river.mouth, Caspian Sea
Kura River, geography.river.basin_countries, Azerbaijan
Vorskla River, geography.river.basin_countries, Ukraine
Kodori River, location.location.partially_containedby, Georgia
Lokomotiv Stadium, sports.sports_facility.teams, FC Volga Nizhny Novgorod
m.0wg8wh1, location.partial_containment_relationship.partially_contains, Vorskla River
Kodori River, common.topic.notable_types, River
m.02xw90z, location.adjoining_relationship.adjoins, Russia
Russia, location.location.partially_contains, Kolyma River
Lovat River, geography.river.basin_countries, Belarus
Kazakhstan, location.location.partiallycontains, m.0wg91pz
Russia, location.location.partiallycontains, m.0wjpp0g
Russia, location.location.partiallycontains, m.0wg8wfs
Kura River, location.location.partially_containedby, Turkey
Azerbaijan, location.location.partially_contains, Samur River
Russia, location.statistical_region.time_required_to_start_a_business, g.1hhc3zgzr
Vorotan, geography.river.basin_countries, Azerbaijan
Paatsjoki, geography.river.basin_countries, Russia
Kolyma River, geography.river.basin_countries, Russia
m.0wg8wp_, location.partial_containment_relationship.partially_contains, Kolyma River
Volga River, common.topic.article, m.0h2j5
Lovat River, location.location.partially_containedby, Russia
Neman, geography.river.basin_countries, Poland
Lovat River, geography.river.basin_countries, Russia
Volga River, common.topic.notable_for, g.12582sjth
Selenga River, geography.river.basin_countries, Russia
Georgia, location.location.partially_contains, Terek River
River, freebase.valuenotation.is_reviewed, ID
Russia, location.location.partiallycontains, m.0wg8wc6
Smolensk Oblast, location.location.partially_contains, Iput River
Irtysh River, geography.river.basin_countries, Russia
Kodori River, geography.river.basin_countries, Georgia
m.0j1bzrl, common.webpage.topic, Russia
Russia, location.location.partially_contains, Ural River
Volga River, base.schemastaging.context_name.pronunciation, g.125_l9bz5
Kura River, location.location.containedby, Asia
Samur River, location.location.partially_containedby, Azerbaijan
Ural River, geography.river.origin, Russia
Diklosmta, location.location.partially_containedby, Russia
Kodori River, location.location.partially_contained_by, m.0wjpmq4
Europe, location.location.partially_contains, Aragvi River
Piusa, geography.river.basin_countries, Estonia
Piusa, geography.river.basin_countries, Russia
Tebulosmta, location.location.partially_containedby, Russia
Ishim River, location.location.partially_containedby, Kazakhstan
Russia, location.statistical_region.time_required_to_start_a_business, g.1hhc3xgl7
Lutto, geography.river.basin_countries, Russia
Kolyma River, location.location.containedby, Asia
Selenga River, common.topic.notable_types, River
Turkey, location.location.partially_contains, Kura River
Tes River, geography.river.basin_countries, Russia
Psou River, base.schemastaging.disputed_location.claimed_by, Georgia
Gora Tepli, location.location.containedby, Russia
Russia, location.location.adjoin_s, m.05g_64l
Russia, location.location.partially_contains, Gestola
Russia, location.location.partiallycontains, m.0wg8wb2
Russia, location.location.adjoin_s, m.0jkldkv
River, common.topic.notable_for, g.1258h89jv
Hrazdan River, location.location.containedby, Armenia
Volga in Yaroslavl (autumn morning), common.image.size, m.01xgrpv
Russia, location.location.partiallycontains, m.0wg8wpj
Piusa, location.location.partially_containedby, Russia
Aragvi River, location.location.containedby, Georgia
Russia, location.location.partially_contains, Oskol River
Ishim River, location.location.containedby, Asia
River, type.type.domain, Physical Geography
Russia, location.location.partially_contains, Lovat River
Elbrus-East Peak, location.location.containedby, Russia
Samur River, location.location.partially_containedby, Russia
Ukraine, location.location.partially_contains, Vorskla River
Kolyma River, location.location.partially_containedby, Russia
m.0wg8wmn, location.partial_containment_relationship.partially_contains, Ilek River
m.02xw90r, location.adjoining_relationship.adjoins, Russia
Ural River, geography.river.mouth, Caspian Sea
Hrazdan River, location.location.partially_containedby, Asia
Volga River, geography.river.cities, Saratov
Russia, location.location.events, g.12pgczy4h
Terek River, geography.river.basin_countries, Georgia
Little Yenisei River, geography.river.mouth, Yenisei River
Volga River, geography.body_of_water.bridges, g.1235qp6z
Asia, location.location.partially_contains, Aragvi River
River, freebase.type_hints.included_types, Geographical Feature
m.0wg8wgf, location.partial_containment_relationship.partially_contains, Psel River
Tartar, geography.river.mouth, Kura River
Russia, location.location.partially_contains, Dombay-Ulgen
Lieksanjoki, geography.river.basin_countries, Russia
Caspian Sea, geography.lake.inflow, Terek River
Alazani, geography.river.origin, Greater Caucasus
Psou River, geography.river.basin_countries, Russia
Aragvi River, location.location.partially_containedby, Europe
Russia, location.location.partiallycontains, m.0wg8wnr
Russia, location.location.partiallycontains, m.0wg8wbl
Russia, location.location.partially_contains, Nairamdal Peak
m.05sspv0, location.adjoining_relationship.adjoins, Russia
Russia, common.topic.webpage, m.0b467cd
Ural River, location.location.partially_containedby, Europe
Russia, location.location.partiallycontains, m.0wg8wk8
Russia, location.location.partially_contains, Psel River
Lieksanjoki, common.topic.notable_types, River
Volga River, common.topic.notable_types, River
Ilek River, location.location.containedby, Asia
Russia, location.statistical_region.time_required_to_start_a_business, g.1hhc38v7n
Šešupė, geography.river.basin_countries, Poland
Belarus, location.location.partially_contains, Lovat River
Little Yenisei River, location.location.containedby, Asia
Iput River, location.location.partially_containedby, Belarus
m.0b467cd, common.webpage.topic, Russia
Oskol River, location.location.containedby, Europe
Iput River, geography.river.basin_countries, Russia
River, type.type.properties, Length
Georgia, location.location.partially_contains, Kura River
Volga River, geography.geographical_feature.category, River
Vorskla River, geography.river.basin_countries, Russia
River, type.type.properties, Origin
Kura River, common.topic.notable_types, River
Russia, location.location.partiallycontains, m.0wg8wmt
Russia, location.location.partially_contains, Yenisei River
Russia, location.statistical_region.time_required_to_start_a_business, g.1hhc469kj
Emba River, geography.river.basin_countries, Kazakhstan
Russia, location.location.partially_contained_by, m.0wg8kyx
Ural River, location.location.partially_containedby, Kazakhstan
Russia, location.location.partially_contains, Paatsjoki
Russia, location.location.partiallycontains, m.0zmpsh3
Ural River, geography.river.basin_countries, Russia
Psel River, geography.river.basin_countries, Russia
Samur River, location.location.partially_contained_by, m.0wg8wg3
Russia, location.location.partially_contains, Ishim River
Oskol River, location.location.partially_containedby, Ukraine
River, freebase.documented_object.documentation, m.021y5gc
Psou River, location.location.partially_containedby, Asia
Europe, location.location.partially_contains, Russia
Lovat River, location.location.partially_containedby, Novgorod Oblast
Tuva, location.location.containedby, Russia
Volga River, geography.river.cities, Nizhny Novgorod
Alazani, geography.river.mouth, Kura River
Russia, location.location.partiallycontains, m.0wg8wbr
Volga River, geography.river.cities, Volgograd
Russia, location.location.partiallycontains, m.0wjpmtc
Russia, location.location.geolocation, m.046vxh0
Aragvi River, geography.river.mouth, Kura River
Asia, location.location.partially_contains, Emba River
Russia, location.location.partiallycontains, m.0wg8wf3
Ural River, common.topic.notable_types, River
Kura River, location.location.partially_containedby, Georgia
Ilek River, common.topic.notable_types, River
Russia, location.location.events, g.12pgcr9f1
Terek River, location.location.partially_containedby, Russia
Origin, rdf-schema#domain, River
m.0b46k4c, common.webpage.topic, Russia
Oskol River, location.location.partially_containedby, Russia
Ukraine, location.location.partially_contains, Psel River
m.0wp5qq7, location.partial_containment_relationship.partially_contains, Onon River
Nizhny Novgorod, sports.sports_team_location.teams, FC Volga Nizhny Novgorod
Vorskla River, location.location.partially_containedby, Ukraine
Irtysh River, location.location.partially_containedby, Russia
Siberian Federal District, location.location.containedby, Russia
none The Volga at Ulyanovsk, common.image.size, m.01xgrpv
Azerbaijan, location.location.partiallycontains, m.0wg91k6
m.05gq4vn, location.adjoining_relationship.adjoins, Russia
Samur River, geography.river.mouth, Caspian Sea
Selenga River, location.location.containedby, Asia
Kodori River, base.schemastaging.disputed_location.claimed_by, Georgia
Europe, location.location.partially_contains, Samur River
Psel River, geography.river.origin, Kursk Oblast
Neman, geography.river.origin, Belarus
Emba River, location.location.partially_containedby, Asia
Russia, location.statistical_region.time_required_to_start_a_business, g.1hhc422wr
m.0wjpmq4, location.partial_containment_relationship.partially_contains, Kodori River
River, freebase.type_hints.included_types, Location
Yenisei River, geography.river.basin_countries, Russia
Russia, location.location.partially_contains, Onon River
Asia, location.location.partially_contains, Psou River
Russia, location.statistical_region.time_required_to_start_a_business, g.1hhc4y49g
Russia, location.location.partiallycontains, m.0wg8wj0
Irtysh River, location.location.partially_containedby, Kazakhstan
m.0wg8wkr, location.partial_containment_relationship.partially_contains, Amur River
Kazakhstan, location.location.partially_contains, Ural River
Russia, location.location.partially_contains, Ilek River
Russia, location.location.partiallycontains, m.0w_0cc1
Ilek River, geography.river.basin_countries, Russia
Russia, location.location.partiallycontains, m.0zn71sy
Ural River, location.location.partially_contained_by, m.0wg8ldl
Aragvi River, location.location.partially_containedby, Asia
Šešupė, geography.river.basin_countries, Russia
Oulankajoki, geography.river.basin_countries, Finland
Novgorod Oblast, location.location.partially_contains, Lovat River
Kura River, geography.river.basin_countries, Armenia
Ilek River, location.location.partially_containedby, Kazakhstan
Samur River, location.location.partially_containedby, Europe
Russia, location.location.partiallycontains, m.0wg8wd4
Ural River, location.location.partially_containedby, Russia
Amur River, location.location.containedby, Asia
m.02xw902, location.adjoining_relationship.adjoins, Kazakhstan
Russia, location.location.partiallycontains, m.0wg8wfm
Azerbaijan, location.location.partially_contains, Kura River
Psou River, location.location.partially_containedby, Russia
Hrazdan River, location.location.partially_containedby, Europe
Psel River, location.location.partially_containedby, Russia
Syzran–Samara Operation, time.event.locations, Volga River
Selenga River, location.location.partially_contained_by, m.0wg8wnr
Volga River, base.ontologies.ontology_instance.equivalent_instances, m.07nh6v1
Russia, location.location.events, g.1222nvnb
Volga River, geography.river.mouth, Caspian Sea
Russia, location.location.partiallycontains, m.0wg8wr2
Tes River, common.topic.notable_types, River
Astrakhan, location.location.contains, Astrakhan River College
Saratov Bridge, transportation.bridge.body_of_water_spanned, Volga River
Kolyma River, location.location.partially_contained_by, m.0wg8wp_
Ishim River, geography.river.basin_countries, Russia
Russia, location.location.partiallycontains, m.0wg8wm5
Russia, location.location.partially_contains, Iput River
Adygea, location.location.containedby, Russia
Onon River, location.location.partially_containedby, Russia
Psou River, location.location.partially_containedby, Georgia
none The Volga at Ulyanovsk, common.image.appears_in_topic_gallery, Volga River
Russia, location.location.partially_contains, Menza River
Europe, location.location.partially_contains, Emba River
Russia, location.location.partially_contains, Diklosmta
Terek River, location.location.containedby, Europe
m.02n9g15, common.webpage.topic, Russia

Answer: Valdai Hills