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: In the continent featured in the image South America satellite orthographic, what are the three major rivers? 
Knowledge Triplets: South America, book.book_subject.works, The Unknown Shore
South America, base.schemastaging.context_name.pronunciation, m.0131643w
South America, base.folklore.mythology.mythical_creatures, Mono Grande
South America, book.book_subject.works, A death in Brazil
South America, location.location.time_zones, Bolivia Time Zone
South America, common.topic.webpage, m.09w6kn4
Mouth (long./lat./elev.), rdf-schema#domain, River
m.05cpxmx, base.mystery.cryptid_observation.location, South America
South America, location.location.time_zones, Argentina Time Zone
Brasília Time Zone, time.time_zone.locations_in_this_time_zone, South America
Caribbean theater of the American Revolutionary War, time.event.locations, South America
Stories in the Time of Cholera, book.written_work.subjects, South America
South America, location.location.events, United States Exploring Expedition
River, freebase.type_hints.included_types, Geographical Feature
Bunnik Tours, travel.tour_operator.travel_destinations, South America
Amazon diary, book.written_work.subjects, South America
South America, book.book_subject.works, Dinosaur Summer
South America, location.location.containedby, Western Hemisphere
South America, book.book_subject.works, Between Extremes
South America, book.book_subject.works, Ecuador
South America, organization.organization_scope.organizations_with_this_scope, The Bouqs Company
South America, common.topic.webpage, m.09wd4_m
South America, book.book_subject.works, Bel Canto
South America, base.mystery.cryptid_area_of_occurrence.cryptid_s_found_here, Hombre Gato
The Cloud Forest, book.written_work.subjects, South America
Western Hemisphere, location.location.contains, South America
Battle of Pločnik, time.event.locations, South America
River, base.descriptive_names.names.descriptive_name, m.0_z2cn7
South America, book.book_subject.works, Che Guevara and the Mountain of Silver
Geographical Feature, common.topic.article, m.02hzhy1
River, common.topic.notable_for, g.1258h89jv
South America, book.book_subject.works, Amazon diary
River, base.descriptive_names.names.descriptive_name, m.0_z5pyn
Physical Geography, freebase.documented_object.documentation, m.01xwjs9
Cities, type.property.schema, River
The Lost World, book.written_work.subjects, South America
Uruguay Time Zone, time.time_zone.locations_in_this_time_zone, South America
Americas, location.location.contains, Ecuador
m.05cf4vq, base.mystery.cryptid_observation.location, South America
South America, location.location.adjoin_s, m.046cvv2
South America, book.book_subject.works, Fire and desire
South America, location.location.people_born_here, John De Luca
m.09wd4_m, common.webpage.topic, South America
Continent, freebase.type_hints.included_types, Topic
South America, book.book_subject.works, The South American Tour
Ecuador, book.written_work.subjects, South America
South America, book.book_subject.works, Amazon
South America, book.book_subject.works, Rain Player
Physical Geography, freebase.domain_profile.featured_views, Mountain range
River, type.type.properties, Mouth Elevation
Geographical Feature, freebase.type_profile.equivalent_topic, Geographical feature
South America, book.book_subject.works, Chile and the Nazis
Suriname Time Zone, time.time_zone.locations_in_this_time_zone, South America
Vcoins, organization.organization.geographic_scope, Americas
Americas, location.location.time_zones, Uruguay Time Zone
South America, location.location.events, Caribbean theater of the American Revolutionary War
River, base.descriptive_names.names.descriptive_name, m.0_z2fg1
South America, book.book_subject.works, A Soldier of the 71st
South America, symbols.namesake.named_after, Amerigo Vespucci
Partially contains, rdf-schema#range, Location
Valparaíso Region, location.location.primarily_containedby, South America
Jonas Brothers World Tour 2009, time.event.locations, South America
m.04kgyz0, location.geometry.delineates_location, South America
South America, common.topic.webpage, m.09xn91w
DVD Region 4, location.location.contains, South America
Continent, freebase.type_profile.published, Published
Bodies of water, base.skosbase.skos_concept.narrower_topic, River
Eva Luna, book.written_work.subjects, South America
Battle of La Mesa, time.event.locations, South America
Americas, location.location.time_zones, Amazon Time Zone
South America, book.book_subject.works, Shabono
Image, type.property.schema, Topic
Americas, location.location.contains, Chile
South America, book.book_subject.works, The Lost World
René Moncada, people.person.place_of_birth, South America
Earth, base.locations.planets.continents_within, South America
Bel Canto, book.written_work.subjects, South America
South America, common.topic.article, m.06n47
Continent, freebase.type_hints.included_types, Location
Americas, location.location.time_zones, French Guiana Time Zone
South America, base.ontologies.ontology_instance.equivalent_instances, m.09kljx0
South America, location.location.time_zones, Colombia Time Zone
Guyana Time Zone, time.time_zone.locations_in_this_time_zone, South America
Physical Geography, type.domain.types, Body Of Water
Body Of Water, owl#inverseOf, Islands
South America, location.location.partially_contains, France
Location, type.type.properties, Contains
South America, book.book_subject.works, Paddle to the Amazon
South America, location.location.events, Blockade of Africa
South America, location.location.time_zones, Fernando de Noronha Time Zone
Marvelous Possessions, book.written_work.subjects, South America
Lies In, rdf-schema#range, Body Of Water
River, book.book_subject.works, Flood forecasting using artificial neural networks
South America, location.location.contains_major_portion_of, Chile
South America, book.book_subject.works, Dioses Y Legiones
Small earthquake in Chile, book.written_work.subjects, South America
Exclaimer, organization.organization.geographic_scope, Americas
Origin Elevation, type.property.schema, River
Contains major portion of, type.property.schema, Location
South America, book.book_subject.works, Walk Around the West Indies
City of the Beasts, book.written_work.subjects, South America
South America, common.topic.webpage, m.09xrv6d
South America, organization.organization_scope.organizations_with_this_scope, Exclaimer
South America, book.book_subject.works, City of the Beasts
South America, location.location.partiallycontains, m.010ntq0p
River, type.type.properties, Basin countries
South America, book.book_subject.works, Blue Gold
South America, common.topic.image, LocationSouthAmerica
South America, common.topic.webpage, m.0b6rdst
River, book.book_subject.works, Crazy for Rivers
River, freebase.type_profile.strict_included_types, Geographical Feature
South America, location.location.geometry, m.04kgyz0
Geographical Feature, freebase.type_profile.published, Published
Contains major portion of, rdf-schema#domain, Location
2016 Copa Libertadores, time.event.locations, South America
River, freebase.type_profile.strict_included_types, Topic
South America, book.book_subject.works, Colombia 360
Genova Diagnostics, organization.organization.geographic_scope, South America
South America, location.location.time_zones, Amazon Time Zone
Northern Hemisphere, location.location.partiallycontains, m.0wg91zl
Western Hemisphere, location.location.contains, Americas
South America, location.location.events, Paraguayan War
m.0wg9f8v, location.partial_containment_relationship.partially_contained_by, South America
War of the Pacific, time.event.locations, South America
Topic, type.type.properties, Image
South America, book.book_subject.works, In trouble again
River, common.topic.image, River gambia Niokolokoba National Park
Flights of Victory\\/Vuelos De Victoria, book.written_work.subjects, South America
Mouth Elevation, type.property.schema, River
South America, book.book_subject.works, Jaguars and Electric Eels
South America, common.topic.webpage, m.09yc_9t
Paula, book.written_work.subjects, South America
Chile, location.location.containedby, Americas
River, freebase.documented_object.documentation, m.021y5gc
Physical Geography, freebase.domain_profile.featured_views, Geographical feature category
River, base.skosbase.vocabulary_equivalent_topic.equivalent_concept, River
Amerigo Vespucci, symbols.name_source.namesakes, South America
Location, type.type.properties, Geolocation
Over the Andes, book.written_work.subjects, South America
Che Guevara and the Mountain of Silver, book.written_work.subjects, South America
South America, location.location.events, 2009 flu pandemic
South America, book.book_subject.works, The Condor years
m.0wg9f8b, location.partial_containment_relationship.partially_contained_by, South America
River, type.type.properties, Average discharge
The Voyage of the Beagle, book.written_work.subjects, South America
Valparaíso Province, location.location.primarily_containedby, South America
Shadow of a Bull, book.written_work.subjects, South America
Sacred Vine of Spirits, book.written_work.subjects, South America
Basin area, rdf-schema#domain, River
m.09wv2sw, common.webpage.topic, South America
Geographical Feature, freebase.documented_object.documentation, m.02hzhy1
River, freebase.type_hints.included_types, Body Of Water
A Soldier of the 71st, book.written_work.subjects, South America
Americas, common.topic.notable_types, Continent
Pluralsight, organization.organization.geographic_scope, South America
River, common.topic.notable_types, Geographical feature category
Geographical Feature, type.type.properties, Category
Physical Geography, freebase.domain_profile.featured_views, Waterfalls of India
River, freebase.type_profile.published, Published
River, base.descriptive_names.names.descriptive_name, m.0_z2fjb
South America satellite orthographic, common.image.size, m.01z0kgh
South America, base.mystery.cryptid_area_of_occurrence.cryptid_s_found_here, Minhocão
m.0wg91zl, location.partial_containment_relationship.partially_contains, South America
Physical Geography, freebase.domain_profile.featured_views, Lake
South America, location.statistical_region.population, m.0ndtsvy
South America, common.topic.webpage, m.09w_gv7
Overseas France, location.location.partially_containedby, South America
South America, location.location.events, Jonas Brothers World Tour 2009
Mouth, type.property.schema, River
Physical Geography, freebase.domain_profile.featured_views, Glacier
Mutual Impressions, book.written_work.subjects, South America
Amazon, book.written_work.subjects, South America
South America, location.location.time_zones, Paraguay Time Zone
South America, book.book_subject.works, In Patagonia
River, base.descriptive_names.names.descriptive_name, m.010k9n0f
South America, location.location.time_zones, Venezuela Time Zone
South America, book.book_subject.works, The Gift
In Patagonia, book.written_work.subjects, South America
South America, book.book_subject.works, The Mangrove Coast
South America, location.location.events, Asylum Tour
South America, location.location.time_zones, Peru Time Zone
Origin, type.property.schema, River
Jaguars and Electric Eels, book.written_work.subjects, South America
South America, book.book_subject.works, Shadow of a Bull
South America, location.location.time_zones, French Guiana Time Zone
River, type.type.properties, Cities
South America, location.location.partiallycontains, m.0wg9f8b
Basin countries, rdf-schema#range, Country
Length, type.property.schema, River
2013 Infinite 1st World Tour, time.event.locations, South America
Capture of Demerara and Essequibo, time.event.locations, South America
Mono Grande, base.folklore.mythical_creature.mythology, South America
m.010ml4ml, location.partial_containment_relationship.partially_contained_by, South America
Physical Geography, freebase.domain_profile.featured_views, Seven Summits
Americas, location.location.containedby, Western Hemisphere
Perfect Symmetry 2009 Concert Tour, time.event.locations, South America
South America, location.location.partially_contained_by, m.0wg91zx
m.09xrv6d, common.webpage.topic, South America
River, freebase.type_profile.equivalent_topic, River
Body Of Water, type.type.domain, Physical Geography
South America, book.book_subject.works, The Linger Loco! In Search of the Real Carnival
South America, organization.organization_scope.organizations_with_this_scope, Crystal Fountains
m.046cvv2, location.adjoining_relationship.adjoins, South America
Southern Hemisphere, location.location.partially_contains, South America
Dioses Y Legiones, book.written_work.subjects, South America
River, freebase.type_profile.kind, Definition
Basin area, type.property.schema, River
South America, book.book_subject.works, Byzantium - The Decline and Fall
South America, location.location.events, 2016 Copa Libertadores
South America, book.book_subject.works, The Condor and the Cows
South America, location.location.partially_contained_by, m.0wg91zl
Physical Geography, freebase.domain_profile.featured_views, Island
Body Of Water, type.type.expected_by, Connected Waterways
River, geography.geographical_feature_category.subcategories, Braided river
Chile Time Zone, time.time_zone.locations_in_this_time_zone, South America
Cold War, time.event.locations, South America
River, base.descriptive_names.names.descriptive_name, m.0_z2f5v
Mouth Elevation, rdf-schema#domain, River
South America, base.mystery.cryptid_observation_location.cryptid_s_occurring_here, Maricoxi
Dutch West Indies campaign, time.event.locations, South America
South America, location.location.people_born_here, Erica D. Porter
Southern Hemisphere, location.location.partiallycontains, m.0wg91zx
South America, book.book_subject.works, Mutual Impressions
River, type.type.properties, Origin
South America, location.location.contains_major_portion_of, Valparaíso Province
Physical Geography, freebase.domain_profile.featured_views, River
Yisrael Mordecai Safeek, people.person.place_of_birth, South America
River, type.type.properties, Mouth
South America, location.location.containedby, DVD Region 4
Dinosaur Summer, book.written_work.subjects, South America
South America, book.book_subject.works, Vertical Poetry
Trail of Feathers, book.written_work.subjects, South America
South America, location.location.events, Battle of San Francisco
Falkland Islands Time Zone, time.time_zone.locations_in_this_time_zone, South America
The Unknown Shore, book.written_work.subjects, South America
A Brazilian Alphabet for the Younger Reader, book.written_work.subjects, South America
Fernando de Noronha Time Zone, time.time_zone.locations_in_this_time_zone, South America
South America, book.book_subject.works, Birds of Peru
South America, book.book_subject.works, Carnival
South America, location.location.events, Chaco War
South America, location.location.events, Ecuadorian–Colombian War
South America, organization.organization_scope.organizations_with_this_scope, TellUs Leads
South America, book.book_subject.works, Bogota 360
River, type.type.domain, Physical Geography
Location, type.type.properties, inside
Blue Gold, book.written_work.subjects, South America
Lost treasure of the Inca, book.written_work.subjects, South America
Under the Volcano, book.written_work.subjects, South America
m.0wg9f9b, location.partial_containment_relationship.partially_contained_by, South America
South America, book.book_subject.works, Marvelous Possessions
The Gift, book.written_work.subjects, South America
South America, book.book_subject.works, At play in the fields of the Lord
Continent, type.type.domain, Location
Location, type.type.properties, Contains major portion of
South America, location.location.time_zones, Ecuador Time Zone
South America, book.book_subject.works, The Knee-High Man and Other Tales
Americas, location.location.time_zones, Falkland Islands Time Zone
South America, common.topic.webpage, m.09y9270
Two wheels through terror, book.written_work.subjects, South America
South America, book.book_subject.works, The Little School
Geographical feature category, type.type.properties, Features
River, type.type.properties, Origin Elevation
Dark Possession, book.written_work.subjects, South America
Origin (long./lat./elev.), type.property.schema, River
South America, base.locations.continents.planet, Earth
South America, location.location.events, Battle of Pločnik
South America, book.book_subject.works, Flights of Victory\\/Vuelos De Victoria
South America, common.topic.webpage, m.09w6q7m
United States Exploring Expedition, time.event.locations, South America
South America, location.location.events, 2013 Infinite 1st World Tour
South America, location.location.time_zones, Chile Time Zone
Origin (long./lat./elev.), rdf-schema#domain, River
Northern Hemisphere, common.topic.notable_types, Location
The Bouqs Company, organization.organization.geographic_scope, South America
Argentina Time Zone, time.time_zone.locations_in_this_time_zone, South America
m.0b4618w, common.webpage.topic, River
Colombia Time Zone, time.time_zone.locations_in_this_time_zone, South America
South America, location.location.events, Dig Out Your Soul Tour
Geographical Feature, type.type.domain, Physical Geography
South America, location.location.time_zones, Falkland Islands Time Zone
South America, book.book_subject.works, Los Viajes
River, type.type.properties, Mouth (long./lat./elev.)
South America, common.topic.image, South America satellite orthographic
River, base.descriptive_names.names.descriptive_name, m.0_z2fdd
South America, book.book_subject.works, Lost treasure of the Inca
Contains, rdf-schema#range, Location
South America, location.location.partiallycontains, m.010ml4ml
South America, organization.organization_scope.organizations_with_this_scope, Vcoins
Crystal Fountains, organization.organization.geographic_scope, South America
Origin (long./lat./elev.), rdf-schema#range, Geocode
South America, organization.organization_scope.organizations_with_this_scope, Genova Diagnostics
Continent, freebase.type_profile.kind, Definition
South America, book.book_subject.works, Dark Possession
South America, location.location.events, War of the Pacific
South America, location.location.partially_containedby, Southern Hemisphere
m.09w6q7m, common.webpage.topic, South America
South America, book.book_subject.works, Paula
South America, book.book_subject.works, Hispanic Nations of the New World
South America, location.location.people_born_here, Yisrael Mordecai Safeek
Birds of Peru, book.written_work.subjects, South America
Ecuadorian–Colombian War, time.event.locations, South America
South America, book.book_subject.works, The Cloud Forest
Geolocation, rdf-schema#range, Geocode
Chile and the Nazis, book.written_work.subjects, South America
South America, location.location.events, Capture of Demerara and Essequibo
Rain Player, book.written_work.subjects, South America
Physical Geography, freebase.domain_profile.featured_views, Mountain
South America, freebase.valuenotation.is_reviewed, Time zone(s)
South America, common.topic.notable_for, g.125cpbn5g
m.09kljx0, base.ontologies.ontology_instance_mapping.freebase_topic, South America
Americas, location.location.time_zones, Peru Time Zone
Erica D. Porter, people.person.place_of_birth, South America
South America, common.topic.webpage, m.09yfxcy
South America, book.book_subject.works, A History of Venice
South America, book.book_subject.works, Glass mountain
River, base.descriptive_names.names.descriptive_name, m.010k9pd2
South America, common.topic.webpage, m.09yb0dx
South America, common.topic.webpage, m.09wv2sw
South America, location.location.events, Spanish–Portuguese War
War of the Confederation, time.event.locations, South America
South America, book.book_subject.works, Journey through the wilderness
Geographical Feature, freebase.type_hints.included_types, Topic
Northern Hemisphere, location.location.partially_contains, South America
Glass mountain, book.written_work.subjects, South America
Location, type.type.properties, Water area
Living Poor, book.written_work.subjects, South America
Battle of San Francisco, time.event.locations, South America
River, base.skosbase.vocabulary_equivalent_topic.broader_concept, Bodies of water
Physical Geography, freebase.domain_profile.featured_views, Map of Waterfalls in India
Mono Grande, base.mystery.cryptid_classification.area_of_occurrence, South America
South America, location.location.people_born_here, René Moncada
The Voyage Out, book.written_work.subjects, South America
Geographical Feature, freebase.type_hints.included_types, Location
The Condor and the Cows, book.written_work.subjects, South America
French Guiana Time Zone, time.time_zone.locations_in_this_time_zone, South America
Geographical Feature, freebase.type_profile.kind, Definition
Maricoxi, base.mystery.cryptid_classification.area_of_occurrence, South America
Between Extremes, book.written_work.subjects, South America
John De Luca, people.person.place_of_birth, South America
River, base.descriptive_names.names.descriptive_name, m.0_z2gx4
South America, book.book_subject.works, Small earthquake in Chile
Body Of Water, freebase.type_hints.included_types, Geographical Feature
South America, common.topic.webpage, m.09wd4nc
Blockade of Africa, time.event.locations, South America
South America, location.location.time_zones, Brasília Time Zone
m.07nfqrb, base.ontologies.ontology_instance_mapping.freebase_topic, River
m.09w_gv7, common.webpage.topic, South America
Asylum Tour, time.event.locations, South America
A death in Brazil, book.written_work.subjects, South America
South America, location.location.events, Perfect Symmetry 2009 Concert Tour
South America, location.location.time_zones, Uruguay Time Zone
Hombre Gato, base.mystery.cryptid.area_of_occurrence, South America
South America, book.book_subject.works, Living Poor
River, visual_art.art_subject.artwork_on_the_subject, River Scene
South America, location.location.contains_major_portion_of, Valparaíso Region
South America, location.location.events, Cold War
River, freebase.equivalent_topic.equivalent_type, River
Maricoxi, base.mystery.cryptid.area_of_occurrence, South America
Geographical feature category, freebase.type_hints.included_types, Topic
South America, location.location.containedby, Americas
River, freebase.type_profile.strict_included_types, Location
South America, book.book_subject.works, The Voyage of the Beagle
Cities, rdf-schema#domain, River
South America, base.mystery.cryptid_area_of_occurrence.cryptid_s_found_here, Mono Grande
Origin, rdf-schema#domain, River
Primarily contained by, rdf-schema#range, Location
Hispanic Nations of the New World, book.written_work.subjects, South America
Ecuador, location.location.primarily_containedby, South America
A History of Venice, book.written_work.subjects, South America
Bolivia Time Zone, time.time_zone.locations_in_this_time_zone, South America
m.09yfxcy, common.webpage.topic, South America
Average discharge, rdf-schema#domain, River
River, base.ontologies.ontology_instance.equivalent_instances, m.07nfqrb
Dig Out Your Soul Tour, time.event.locations, South America
South America, book.book_subject.works, Over the Andes
South America, book.book_subject.works, Persona Non Grata
Southern Hemisphere, common.topic.notable_types, Location
River, common.topic.article, m.06cn_
South America satellite orthographic, common.image.appears_in_topic_gallery, South America
At play in the fields of the Lord, book.written_work.subjects, South America
Location, type.type.properties, GEOnet feature ID
South America, book.book_subject.works, Mayeros
m.09wd4nc, common.webpage.topic, South America
Chaco War, time.event.locations, South America
Contains major portion of, rdf-schema#range, Location
Basin countries, rdf-schema#domain, River
Spanish–Portuguese War, time.event.locations, South America
South America, location.location.events, Battle of La Mesa
Paraguayan War, time.event.locations, South America
Physical Geography, freebase.domain_profile.featured_views, Waterfall
River, common.topic.article, m.021y5gc
Exclaimer, organization.organization.geographic_scope, South America
Mayeros, book.written_work.subjects, South America
Ecuador, location.location.partially_containedby, South America
m.0wg91zx, location.partial_containment_relationship.partially_contained_by, Southern Hemisphere
Ecuador, location.location.containedby, Americas
m.09y9270, common.webpage.topic, South America
Americas, symbols.namesake.named_after, Amerigo Vespucci
m.09yc_9t, common.webpage.topic, South America
River, base.descriptive_names.names.descriptive_name, m.011v4jbb
River, common.topic.image, The Mária Valéria bridge as seen from Esztergom Basilica
The South American Tour, book.written_work.subjects, South America
South America, periodicals.newspaper_circulation_area.newspapers, Draugas
The Condor years, book.written_work.subjects, South America
South America, book.book_subject.works, Sacred Vine of Spirits
Los Viajes, book.written_work.subjects, South America
South America, location.location.partially_containedby, Northern Hemisphere
South America, book.book_subject.works, Eva Luna
South America, base.mystery.cryptid_observation_location.cryptid_observation_s, m.05cf4vq
Colombia 360, book.written_work.subjects, South America
River, type.type.properties, Basin area
Vertical Poetry, book.written_work.subjects, South America
South America, location.location.partially_contains, Ecuador
South America, location.location.partiallycontains, m.0wg9f8v
Length, rdf-schema#domain, River
South America, base.mystery.cryptid_observation_location.cryptid_observation_s, m.05cpxmx
South America, location.statistical_region.population, m.0hp11yw
River, type.type.properties, Length
Connected Waterways, type.property.expected_type, Body Of Water
South America, book.book_subject.works, A Brazilian Alphabet for the Younger Reader
m.0b6rdst, common.webpage.topic, South America
River, base.descriptive_names.names.descriptive_name, m.0_z2g20
South America, book.book_subject.works, The Voyage Out
River, freebase.type_hints.included_types, Topic
Chile, location.location.primarily_containedby, South America
Basin countries, type.property.schema, River
South America, base.mystery.cryptid_area_of_occurrence.cryptid_s_found_here, Maricoxi
Physical Geography, freebase.domain_profile.featured_topic, K2
Continent, freebase.type_profile.strict_included_types, Topic
Draugas, book.newspaper.circulation_areas, South America
South America, book.book_subject.works, Two wheels through terror
Average discharge, type.property.schema, River
South America, location.location.contains_major_portion_of, Ecuador
Vcoins, organization.organization.geographic_scope, South America
South America, book.book_subject.works, Bookclub-In-A-Box Discusses the Novel Bel Canto by Ann Patchett
South America, book.book_subject.works, Stories in the Time of Cholera
The Little School, book.written_work.subjects, South America
Mouth (long./lat./elev.), type.property.schema, River
Water, common.topic.subject_of, River
River, common.topic.webpage, m.0b4618w
m.09yb0dx, common.webpage.topic, South America
Geographical Feature, freebase.type_profile.strict_included_types, Location
2009 flu pandemic, time.event.locations, South America
South America, location.location.events, Dutch West Indies campaign
River, geography.geographical_feature_category.subcategories, Entrenched river
South America, book.book_subject.works, Soldiers of Fortune
Image, rdf-schema#domain, Topic
Minhocão, base.mystery.cryptid.area_of_occurrence, South America
River, common.topic.subjects, Water
Geographical feature category, type.type.domain, Physical Geography
South America, location.location.partiallycontains, m.0wg9f9b
Jabez, book.written_work.subjects, South America
South America, book.book_subject.works, Under the Volcano
TellUs Leads, organization.organization.geographic_scope, South America
South America, book.book_subject.works, Jabez
Soldiers of Fortune, book.written_work.subjects, South America
Origin Elevation, rdf-schema#domain, River
Persona Non Grata, book.written_work.subjects, South America
South America, location.location.partially_contains, Overseas France
River, base.descriptive_names.names.descriptive_name, m.011v4ht9
River, geography.geographical_feature_category.subcategories, Subterranean river
South America, book.book_subject.works, Historia Politica Del Mundo Contemporaneo
In trouble again, book.written_work.subjects, South America
Fire and desire, book.written_work.subjects, South America
South America, base.mystery.cryptid_observation_location.cryptid_s_occurring_here, Mono Grande
River, common.topic.image, Colour patch near Blackwood mouth
River, type.type.properties, Origin (long./lat./elev.)
Mouth, rdf-schema#domain, River
Shabono, book.written_work.subjects, South America
m.0wg91zx, location.partial_containment_relationship.partially_contains, South America
River, freebase.valuenotation.is_reviewed, ID
m.09w6kn4, common.webpage.topic, South America
Journey through the wilderness, book.written_work.subjects, South America
LocationSouthAmerica, common.image.appears_in_topic_gallery, South America
Paraguay Time Zone, time.time_zone.locations_in_this_time_zone, South America
South America, common.topic.notable_types, Continent
Walk Around the West Indies, book.written_work.subjects, South America
m.09xn91w, common.webpage.topic, South America
Paddle to the Amazon, book.written_work.subjects, South America
South America, location.location.time_zones, Suriname Time Zone
The Linger Loco! In Search of the Real Carnival, book.written_work.subjects, South America
Geographical feature category, type.type.expected_by, Category
The Mangrove Coast, book.written_work.subjects, South America
Mono Grande, base.mystery.cryptid.area_of_occurrence, South America
River, base.schemastaging.context_name.pronunciation, g.125_qh99h
Physical Geography, type.domain.types, River
Americas, freebase.valuenotation.is_reviewed, Time zone(s)
Historia Politica Del Mundo Contemporaneo, book.written_work.subjects, South America
River, freebase.type_hints.included_types, Location
m.010ntq0p, location.partial_containment_relationship.partially_contained_by, South America
South America, organization.organization_scope.organizations_with_this_scope, Pluralsight
River, common.topic.subject_of, Flood
South America, book.book_subject.works, Trail of Feathers
Physical Geography, freebase.domain_profile.featured_views, First Ascents
Americas, location.location.contains, South America
Water, common.topic.subject_of, Flood
South America, location.location.geolocation, m.0bg8fss
South America, location.location.events, War of the Confederation
River, base.descriptive_names.names.descriptive_name, m.0_z2fcc
South America, location.location.time_zones, Guyana Time Zone
Geographical Feature, type.type.expected_by, Features
Amazon Time Zone, time.time_zone.locations_in_this_time_zone, South America
Connected Waterways, rdf-schema#range, Body Of Water
The Peru Reader, book.written_work.subjects, South America
Carnival, book.written_work.subjects, South America
The Knee-High Man and Other Tales, book.written_work.subjects, South America
South America, travel.travel_destination.tour_operators, Bunnik Tours
Byzantium - The Decline and Fall, book.written_work.subjects, South America
Contained by, rdf-schema#range, Location
Bogota 360, book.written_work.subjects, South America
France, location.location.partially_containedby, South America
South America, book.book_subject.works, The Peru Reader

Answer: Rio Negro
Orinoco
Amazon River