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 are the three major rivers in south america? 
Knowledge Triplets: South Georgia and the South Sandwich Islands, location.location.containedby, Atlantic Ocean
South America, book.book_subject.works, The Lost World
South America, location.location.events, Ecuadorian–Colombian War
South America, location.location.events, Spanish–Portuguese War
South America, common.topic.image, LocationSouthAmerica
m.010ntq0p, location.partial_containment_relationship.partially_contained_by, South America
South America, book.book_subject.works, The Knee-High Man and Other Tales
Americas, location.location.contains, Saba
South America, book.book_subject.works, Vertical Poetry
Americas, location.location.contains, Canada
Chile, location.location.primarily_containedby, South America
Petorca Province, location.location.containedby, South America
Bolivia, location.location.containedby, South America
René Moncada, people.person.place_of_birth, South America
Americas, location.location.contains, South America
South America, location.location.contains_major_portion_of, Chile
North America, base.locations.continents.countries_within, Saint Vincent and the Grenadines
Uruguay, location.location.containedby, South America
Los Viajes, book.written_work.subjects, South America
Dutch West Indies campaign, time.event.locations, South America
Amazon River, freebase.valuenotation.is_reviewed, Time zone(s)
m.09yfxcy, common.webpage.topic, South America
Chile Time Zone, time.time_zone.locations_in_this_time_zone, South America
Caribbean theater of the American Revolutionary War, time.event.locations, South America
Blockade of Africa, time.event.locations, South America
Battle of Pločnik, time.event.locations, South America
A History of Venice, book.written_work.subjects, South America
South America, location.location.partially_contained_by, m.0wg91zx
Suriname, location.location.containedby, South America
Southern Hemisphere, common.topic.notable_types, Location
m.09y9270, common.webpage.topic, South America
The Voyage Out, book.written_work.subjects, South America
The Mangrove Coast, book.written_work.subjects, South America
San Antonio Province, location.location.containedby, South America
Mayeros, book.written_work.subjects, South America
Americas, location.location.contains, French Guiana
m.09wd4nc, common.webpage.topic, South America
Americas, location.location.contains, Colombia
Jonas Brothers World Tour 2009, time.event.locations, South America
South America, location.location.contains_major_portion_of, Ecuador
Between Extremes, book.written_work.subjects, South America
Vertical Poetry, book.written_work.subjects, South America
South America, book.book_subject.works, Trail of Feathers
South America, organization.organization_scope.organizations_with_this_scope, Genova Diagnostics
Colombia, location.location.containedby, South America
South America, book.book_subject.works, A death in Brazil
South America, book.book_subject.works, Journey through the wilderness
South America, book.book_subject.works, Amazon
North America, location.location.containedby, Western Hemisphere
Mono Grande, base.folklore.mythical_creature.mythology, South America
South America, base.folklore.mythology.mythical_creatures, Mono Grande
m.09kljx0, base.ontologies.ontology_instance_mapping.freebase_topic, South America
South America, location.location.contains_major_portion_of, Valparaíso Region
Americas, location.location.contains, Argentina
Ocean, geography.geographical_feature_category.features, Southern Ocean
Bunnik Tours, travel.tour_operator.travel_destinations, South America
Venezuela, location.location.containedby, South America
South America, base.mystery.cryptid_area_of_occurrence.cryptid_s_found_here, Hombre Gato
Americas, location.location.contains, Ecuador
Dinosaur Summer, book.written_work.subjects, South America
m.09xn91w, common.webpage.topic, South America
South America, location.location.containedby, Americas
m.05cf4vq, base.mystery.cryptid_observation.location, South America
Jaguars and Electric Eels, book.written_work.subjects, South America
South America, location.location.events, Cold War
Latin America, location.location.partially_contains, Caribbean
Carnival, book.written_work.subjects, South America
South America, book.book_subject.works, Birds of Peru
Indian Ocean, location.location.partially_contains, French Southern and Antarctic Lands
South America, location.location.partially_contains, Overseas France
South Georgia and the South Sandwich Islands, location.country.official_language, English Language
In trouble again, book.written_work.subjects, South America
Central America, location.location.events, Caribbean theater of the American Revolutionary War
Americas, location.location.contains, Trinidad and Tobago
San Felipe de Aconcagua Province, location.location.containedby, South America
Americas, location.location.contains, g.122srxp9
South America, location.location.events, Paraguayan War
South America, book.book_subject.works, The Linger Loco! In Search of the Real Carnival
South America, book.book_subject.works, Bogota 360
Southern Hemisphere, common.topic.image, Hemisferio Sur
Bogota 360, book.written_work.subjects, South America
A death in Brazil, book.written_work.subjects, South America
m.0b6rdst, common.webpage.topic, South America
South America, location.location.time_zones, Argentina Time Zone
The South American Tour, book.book.editions, The South American tour : a descriptive guide
Central America, book.book_subject.works, Mayeros
South America, location.location.contains_major_portion_of, Valparaíso Province
South America, book.book_subject.works, The Voyage of the Beagle
Caribbean, location.location.containedby, Americas
Americas, location.statistical_region.population, m.011n96gt
Amazon River, geography.river.basin_countries, Ecuador
South America, location.location.events, Battle of La Mesa
Fernando de Noronha Time Zone, time.time_zone.locations_in_this_time_zone, South America
Americas, location.location.contains, United States of America
Paraguayan War, time.event.locations, South America
South America, location.location.events, Dutch West Indies campaign
South America, book.book_subject.works, Chile and the Nazis
South America, book.book_subject.works, Amazon diary
South America, book.book_subject.works, Eva Luna
The Knee-High Man and Other Tales, book.written_work.subjects, South America
Central America, book.book_subject.works, Jaguars and Electric Eels
Brazil, location.location.partially_contains, Amazon River
Mutual Impressions, book.written_work.subjects, South America
South America, book.book_subject.works, Lost treasure of the Inca
Amazon River, location.location.partially_containedby, Brazil
Amazon Time Zone, time.time_zone.locations_in_this_time_zone, South America
South America, organization.organization_scope.organizations_with_this_scope, Pluralsight
South America, book.book_subject.works, The Condor years
m.09wv2sw, common.webpage.topic, South America
South America, location.location.time_zones, Suriname Time Zone
Atlantic Ocean, location.location.contains, South Georgia and the South Sandwich Islands
South America, location.location.time_zones, Bolivia Time Zone
South America, book.book_subject.works, The Peru Reader
The Gift, book.written_work.subjects, South America
South America, book.book_subject.works, The Gift
South America, organization.organization_scope.organizations_with_this_scope, TellUs Leads
m.0wg9f8b, location.partial_containment_relationship.partially_contained_by, South America
m.05cpxmx, base.mystery.cryptid_observation.location, South America
Americas, location.location.contains, g.122nc6z5
Southern Hemisphere, common.topic.article, m.01mryq
Two wheels through terror, book.written_work.subjects, South America
Americas, location.location.contains, Central America
m.09xrv6d, common.webpage.topic, South America
South America, book.book_subject.works, Stories in the Time of Cholera
South America, book.book_subject.works, Hispanic Nations of the New World
South America, book.book_subject.works, Over the Andes
South America, book.book_subject.works, The South American Tour
m.0wg91zx, location.partial_containment_relationship.partially_contains, South America
French Guiana, location.location.containedby, South America
Americas, common.topic.image, LocationAmericas
Guyana Time Zone, time.time_zone.locations_in_this_time_zone, South America
South America, location.location.time_zones, Amazon Time Zone
South America, book.book_subject.works, Walk Around the West Indies
South America, book.book_subject.works, Paula
Americas, location.location.contains, Guadeloupe
North America, location.location.partially_contains, United States of America
Santiago, location.location.containedby, South America
South America, location.location.events, Blockade of Africa
Che Guevara and the Mountain of Silver, book.written_work.subjects, South America
South America, location.location.events, Caribbean theater of the American Revolutionary War
Americas, location.location.contains, Turks and Caicos Islands
Trail of Feathers, book.written_work.subjects, South America
South America, book.book_subject.works, Under the Volcano
United States of America, location.location.partially_containedby, North America
Amazon diary, book.written_work.subjects, South America
Americas, location.location.contains, Guyana
Colombia 360, book.written_work.subjects, South America
South America, common.topic.webpage, m.09yb0dx
Americas, location.location.contains, Nicaragua
Brasília Time Zone, time.time_zone.locations_in_this_time_zone, South America
Americas, location.location.contains, Bolivia
South America, book.book_subject.works, Paddle to the Amazon
South America, book.book_subject.works, City of the Beasts
City of the Beasts, book.written_work.subjects, South America
South America, book.book_subject.works, Glass mountain
Amazon River, location.location.time_zones, Peru Time Zone
South America, book.book_subject.works, Ecuador
Africa, base.locations.continents.countries_within, South Africa
The South American Tour, book.written_work.author, Annie Smith Peck
South America, organization.organization_scope.organizations_with_this_scope, Exclaimer
Americas, common.topic.webpage, m.09yfznn
South America, book.book_subject.works, Che Guevara and the Mountain of Silver
Argentina, location.location.containedby, South America
South America, travel.travel_destination.tour_operators, Bunnik Tours
South America, book.book_subject.works, Flights of Victory\\/Vuelos De Victoria
South America, location.location.adjoin_s, m.046cvv2
South America, common.topic.webpage, m.09xn91w
South America, location.location.events, Dig Out Your Soul Tour
South America, location.location.time_zones, Ecuador Time Zone
Americas, location.location.contains, North America
Americas, common.topic.article, m.07c5x
Walk Around the West Indies, book.written_work.subjects, Central America
South America, book.book_subject.works, Fire and desire
Bel Canto, book.written_work.subjects, South America
Central America, location.location.containedby, Americas
Amazon River, geography.river.basin_countries, Brazil
The Condor and the Cows, book.book.editions, The Condor and the Cows; a South American travel-diary
Ecuadorian–Colombian War, time.event.locations, South America
Central America, location.location.contains, El Salvador
South America satellite orthographic, common.image.size, m.01z0kgh
Peru, location.location.containedby, South America
Exclaimer, organization.organization.geographic_scope, South America
South America, periodicals.newspaper_circulation_area.newspapers, Draugas
Glass mountain, book.written_work.subjects, South America
Bookclub-In-A-Box Discusses the Novel Bel Canto by Ann Patchett, book.written_work.subjects, South America
South America, location.location.events, 2009 flu pandemic
South America, location.location.time_zones, Peru Time Zone
Shabono, book.written_work.subjects, South America
South America, location.location.time_zones, Fernando de Noronha Time Zone
Chaco War, time.event.locations, South America
South America, location.statistical_region.population, m.0ndtsvy
South America, book.book_subject.works, Jabez
Valparaíso Region, location.location.primarily_containedby, South America
Fire and desire, book.written_work.subjects, South America
South America, book.book_subject.works, The Mangrove Coast
Brazil, location.location.containedby, South America
The Voyage of the Beagle, book.written_work.subjects, South America
South America, location.location.time_zones, Falkland Islands Time Zone
South Georgia and the South Sandwich Islands, location.location.containedby, Americas
Argentina Time Zone, time.time_zone.locations_in_this_time_zone, South America
Tierra del Fuego, location.location.containedby, South America
Genova Diagnostics, organization.organization.geographic_scope, South America
Americas, location.location.contains, Latin America
South America, book.book_subject.works, The Cloud Forest
South America, location.location.people_born_here, René Moncada
South America, book.book_subject.works, Bel Canto
Stories in the Time of Cholera, book.written_work.subjects, South America
Sacred Vine of Spirits, book.written_work.subjects, South America
Colombia Time Zone, time.time_zone.locations_in_this_time_zone, South America
South America, book.book_subject.works, Historia Politica Del Mundo Contemporaneo
South America, location.location.partiallycontains, m.0wg9f9b
North America, common.topic.notable_types, Continent
Flights of Victory\\/Vuelos De Victoria, book.written_work.subjects, South America
The Lost World, book.written_work.subjects, South America
Americas, location.location.contains, Jamaica
Pluralsight, organization.organization.geographic_scope, South America
South America, location.location.time_zones, Venezuela Time Zone
South America, book.book_subject.works, Blue Gold
South America, book.book_subject.works, Mutual Impressions
Latin America, location.location.containedby, Americas
French Southern and Antarctic Lands, location.location.partially_containedby, Indian Ocean
Dig Out Your Soul Tour, time.event.locations, South America
John De Luca, people.person.place_of_birth, South America
Central America, location.location.contains, Panama
South America, book.book_subject.works, Persona Non Grata
Amazon River, location.location.partially_containedby, Peru
m.0wg91zl, location.partial_containment_relationship.partially_contains, South America
South America, book.book_subject.works, Los Viajes
South America, location.location.events, Jonas Brothers World Tour 2009
Americas, location.location.contains, Montserrat
Yisrael Mordecai Safeek, people.person.place_of_birth, South America
Latin America, location.location.contains, Belize
Americas, location.location.contains, United States Virgin Islands
Rain Player, book.written_work.subjects, South America
A Soldier of the 71st, book.written_work.subjects, South America
Minhocão, base.mystery.cryptid.area_of_occurrence, South America
Asylum Tour, time.event.locations, South America
War of the Pacific, time.event.locations, South America
Spanish–Portuguese War, time.event.locations, South America
Quillota Province, location.location.containedby, South America
North America, base.locations.continents.countries_within, Antigua and Barbuda
North America, location.location.partiallycontains, m.0wg91xy
South America, location.location.partially_contained_by, m.0wg91zl
m.09w_5_4, common.webpage.topic, Americas
Blue Gold, book.written_work.subjects, South America
2013 Infinite 1st World Tour, time.event.locations, South America
Americas, location.location.contains, Caribbean
South America, location.location.time_zones, Colombia Time Zone
m.09yc_9t, common.webpage.topic, South America
North America, location.location.containedby, Americas
South America, book.book_subject.works, Rain Player
Lost treasure of the Inca, book.written_work.subjects, South America
Americas, location.location.contains, Uruguay
Earth, base.locations.planets.continents_within, South America
The Bouqs Company, organization.organization.geographic_scope, South America
South America, location.location.partially_contains, France
South America, common.topic.webpage, m.09wd4_m
Marga Marga Province, location.location.containedby, South America
Paraguay, location.location.containedby, South America
South America, book.book_subject.works, Soldiers of Fortune
South America, common.topic.webpage, m.09w_gv7
Jaguars and Electric Eels, book.written_work.subjects, Central America
United States of America, location.location.partially_containedby, Pacific Ocean
South America, common.topic.webpage, m.09wv2sw
South America, book.book_subject.works, The Unknown Shore
South America, location.location.events, Battle of Pločnik
United States of America, location.location.primarily_containedby, North America
South America, book.book_subject.works, Shabono
Americas, location.location.contains, Curaçao
South America, location.location.partially_contains, Ecuador
Caribbean, location.location.containedby, North America
Cold War, time.event.locations, South America
South America, base.locations.continents.planet, Earth
South America, location.location.events, War of the Confederation
South America, book.book_subject.works, Dark Possession
Americas, location.location.containedby, Western Hemisphere
South America, book.book_subject.works, Sacred Vine of Spirits
Americas, location.location.contains, South Georgia and the South Sandwich Islands
South America, book.book_subject.works, Byzantium - The Decline and Fall
Mono Grande, base.mystery.cryptid.area_of_occurrence, South America
Amazon River, geography.river.basin_countries, Colombia
2016 Copa Libertadores, time.event.locations, South America
South America, base.mystery.cryptid_area_of_occurrence.cryptid_s_found_here, Maricoxi
United States Exploring Expedition, time.event.locations, Africa
War of the Confederation, time.event.locations, South America
South Africa, base.locations.countries.continent, Africa
The South American Tour, common.topic.notable_types, Book
In Patagonia, book.written_work.subjects, South America
Mono Grande, base.mystery.cryptid_classification.area_of_occurrence, South America
Under the Volcano, book.written_work.subjects, South America
South America, book.book_subject.works, Bookclub-In-A-Box Discusses the Novel Bel Canto by Ann Patchett
South America, common.topic.webpage, m.09y9270
Africa, location.location.events, United States Exploring Expedition
South America, location.location.time_zones, Uruguay Time Zone
South America, organization.organization_scope.organizations_with_this_scope, Vcoins
History of the Americas, common.topic.image, LocationAmericas
North America, base.locations.continents.countries_within, Jamaica
South America, base.mystery.cryptid_observation_location.cryptid_s_occurring_here, Mono Grande
South America, location.location.containedby, Western Hemisphere
Americas, location.location.contains, Sint Maarten
South America, location.location.partiallycontains, m.0wg9f8b
m.046cvv2, location.adjoining_relationship.adjoins, South America
Guyana, location.location.containedby, South America
South America satellite orthographic, common.image.appears_in_topic_gallery, South America
South America, book.book_subject.works, Mayeros
Central America, location.location.contains, Guatemala
South America, book.book_subject.works, A Brazilian Alphabet for the Younger Reader
Southern Hemisphere, location.location.partially_contains, South America
The Condor years, book.written_work.subjects, South America
Americas, location.location.time_zones, South Georgia and the South Sandwich Islands Time Zone
Americas, location.location.geolocation, m.0wn3cvp
Paddle to the Amazon, book.written_work.subjects, South America
Paula, book.written_work.subjects, South America
South America, common.topic.webpage, m.09xrv6d
Americas, common.topic.webpage, m.09w_5_4
Americas, location.location.contains, Saint Pierre and Miquelon
Eva Luna, book.written_work.subjects, South America
South America, location.location.geolocation, m.0bg8fss
South America, base.mystery.cryptid_observation_location.cryptid_observation_s, m.05cf4vq
South America, common.topic.notable_types, Continent
South America, base.mystery.cryptid_observation_location.cryptid_observation_s, m.05cpxmx
Americas, location.location.contains, Suriname
Central America, book.book_subject.works, Walk Around the West Indies
South America, location.location.events, 2016 Copa Libertadores
Americas, common.topic.webpage, m.0b4647l
Erica D. Porter, people.person.place_of_birth, South America
South America, location.location.events, Capture of Demerara and Essequibo
The South American Tour, book.written_work.subjects, South America
Falkland Islands, location.location.containedby, South America
Overseas France, location.location.partially_containedby, South America
Central America, location.location.contains, Costa Rica
French Southern and Antarctic Lands, common.topic.notable_types, Administrative Division
Amerigo Vespucci, symbols.name_source.namesakes, South America
South America, location.location.partiallycontains, m.010ml4ml
The Cloud Forest, book.book.editions, The cloud forest; a chronicle of the South American wilderness
Small earthquake in Chile, book.written_work.subjects, South America
The South American Tour, book.written_work.original_language, English Language
Americas, location.location.contains, Saint Kitts and Nevis
South America, base.mystery.cryptid_area_of_occurrence.cryptid_s_found_here, Minhocão
United States of America, base.locations.countries.continent, North America
South America, book.book_subject.works, A Soldier of the 71st
North America, location.location.contains_major_portion_of, United States of America
South America, common.topic.webpage, m.09w6kn4
South America, common.topic.article, m.06n47
Walk Around the West Indies, book.written_work.subjects, South America
Americas, location.location.contains, Falkland Islands
Peru, location.location.partially_contains, Amazon River
The Condor and the Cows, book.written_work.subjects, South America
South America, common.topic.webpage, m.09w6q7m
South America, organization.organization_scope.organizations_with_this_scope, Crystal Fountains
South America, location.location.time_zones, Chile Time Zone
South America, location.location.partiallycontains, m.0wg9f8v
Living Poor, book.written_work.subjects, South America
Amazon River, geography.river.cities, Itacoatiara
Uruguay Time Zone, time.time_zone.locations_in_this_time_zone, South America
Amazon River, geography.river.mouth, Atlantic Ocean
France, location.location.partially_containedby, South America
Crystal Fountains, organization.organization.geographic_scope, South America
A Brazilian Alphabet for the Younger Reader, book.written_work.subjects, South America
Americas, common.topic.notable_types, Continent
South America, location.location.events, Battle of San Francisco
South America, book.book_subject.works, At play in the fields of the Lord
Western Hemisphere, location.location.contains, North America
South America, organization.organization_scope.organizations_with_this_scope, The Bouqs Company
Central America, location.location.contains, Honduras
South America, common.topic.notable_for, g.125cpbn5g
South America, location.location.partially_containedby, Southern Hemisphere
South America, book.book_subject.works, Two wheels through terror
Paraguay Time Zone, time.time_zone.locations_in_this_time_zone, South America
Perfect Symmetry 2009 Concert Tour, time.event.locations, South America
Americas, location.location.contains, Mexico
South America, location.location.people_born_here, Erica D. Porter
m.09yfznn, common.webpage.topic, Americas
North America, base.locations.continents.countries_within, Saint Kitts and Nevis
Jamaica, base.locations.countries.continent, North America
TellUs Leads, organization.organization.geographic_scope, South America
m.04kgyz0, location.geometry.delineates_location, South America
Western Hemisphere, location.location.contains, South America
Americas, location.location.contains, Brazil
Battle of San Francisco, time.event.locations, South America
North America, location.location.adjoin_s, m.046cvv2
South America, book.book_subject.works, Jaguars and Electric Eels
Birds of Peru, book.written_work.subjects, South America
South America, common.topic.webpage, m.0b6rdst
Battle of La Mesa, time.event.locations, South America
North America, location.location.containedby, Northern Hemisphere
m.010ml4ml, location.partial_containment_relationship.partially_contained_by, South America
Los Andes Province, Chile, location.location.containedby, South America
Falkland Islands Time Zone, time.time_zone.locations_in_this_time_zone, South America
Americas, location.location.contains, Belize
South America, book.book_subject.works, The Condor and the Cows
Americas, location.location.contains, British Virgin Islands
South America, base.mystery.cryptid_area_of_occurrence.cryptid_s_found_here, Mono Grande
South America, book.book_subject.works, In trouble again
Amazon River, location.location.time_zones, Brasília Time Zone
South America, location.location.containedby, Amazon River
South America, location.location.geometry, m.04kgyz0
Over the Andes, book.written_work.subjects, South America
South America, location.location.people_born_here, Yisrael Mordecai Safeek
Amazon River, location.location.time_zones, Colombia Time Zone
South America, location.location.events, Chaco War
Jabez, book.written_work.subjects, South America
Americas, common.topic.notable_for, g.1255lzm84
Valparaíso Province, location.location.primarily_containedby, South America
South America, book.book_subject.works, Small earthquake in Chile
Dioses Y Legiones, book.written_work.subjects, South America
South America, book.book_subject.works, The Little School
m.0wg9f8v, location.partial_containment_relationship.partially_contained_by, South America
The Cloud Forest, book.written_work.subjects, South America
Amazon River, location.location.containedby, South America
Amazon River, geography.river.basin_countries, Peru
South America, location.location.time_zones, Paraguay Time Zone
South America, location.location.events, Asylum Tour
South America, book.book_subject.works, Dioses Y Legiones
Chile and the Nazis, book.written_work.subjects, South America
South Africa, location.location.containedby, Africa
The Peru Reader, book.written_work.subjects, South America
South America, symbols.namesake.named_after, Amerigo Vespucci
South America, common.topic.webpage, m.09yfxcy
Southern Hemisphere, common.topic.notable_for, g.1256g3qwg
Vcoins, organization.organization.geographic_scope, South America
The Linger Loco! In Search of the Real Carnival, book.written_work.subjects, South America
South America, freebase.valuenotation.is_reviewed, Time zone(s)
Central America, organization.organization_scope.organizations_with_this_scope, Exclaimer
Ecuador, location.location.primarily_containedby, South America
Central America, symbols.namesake.named_after, Amerigo Vespucci
South America, location.location.events, United States Exploring Expedition
Atacama Desert, location.location.containedby, South America
Valparaíso, location.location.containedby, South America
South America, book.book_subject.works, Carnival
South America, location.location.events, 2013 Infinite 1st World Tour
Suriname Time Zone, time.time_zone.locations_in_this_time_zone, South America
Maricoxi, base.mystery.cryptid_classification.area_of_occurrence, South America
Persona Non Grata, book.written_work.subjects, South America
Shadow of a Bull, book.written_work.subjects, South America
South America, common.topic.webpage, m.09wd4nc
South America, location.location.events, War of the Pacific
Capture of Demerara and Essequibo, time.event.locations, South America
m.0b4647l, common.webpage.topic, Americas
Hispanic Nations of the New World, book.written_work.subjects, South America
Hombre Gato, base.mystery.cryptid.area_of_occurrence, South America
South America, book.book_subject.works, Shadow of a Bull
South America, location.location.time_zones, Brasília Time Zone
United States of America, location.location.containedby, Americas
South America, book.book_subject.works, Between Extremes
South America, common.topic.image, South America satellite orthographic
2009 flu pandemic, time.event.locations, South America
Southern Ocean, location.location.events, United States Exploring Expedition
DVD Region 4, location.location.contains, South America
South America, location.statistical_region.population, m.0hp11yw
South America, base.mystery.cryptid_observation_location.cryptid_s_occurring_here, Maricoxi
The Unknown Shore, book.written_work.subjects, South America
m.09yb0dx, common.webpage.topic, South America
South America, book.book_subject.works, Dinosaur Summer
m.0wg9f9b, location.partial_containment_relationship.partially_contained_by, South America
South America, location.location.time_zones, Guyana Time Zone
The South American Tour, common.topic.notable_for, g.12564jdct
Journey through the wilderness, book.written_work.subjects, South America
Amerigo Vespucci, base.kwebbase.kwtopic.has_sentences, He sighted the mouth of the Orinoco River when making for Haiti, before returning to Spain in June 1500.
French Guiana Time Zone, time.time_zone.locations_in_this_time_zone, South America
South Georgia and the South Sandwich Islands, freebase.valuenotation.is_reviewed, Time zone(s)
Amazon River, location.location.partially_containedby, Colombia
Northern Hemisphere, location.location.partially_contains, South America
United States Exploring Expedition, time.event.locations, Southern Ocean
United States Exploring Expedition, time.event.locations, South America
South America, book.book_subject.works, A History of Venice
South America, book.book_subject.works, Colombia 360
South Georgia and the South Sandwich Islands, location.administrative_division.country, United Kingdom
Marvelous Possessions, book.written_work.subjects, South America
At play in the fields of the Lord, book.written_work.subjects, South America
South America, common.topic.webpage, m.09yc_9t
South America, location.location.partiallycontains, m.010ntq0p
Saba, location.location.containedby, Americas
South America, book.book_subject.works, Marvelous Possessions
South America, book.book_subject.works, Living Poor
Ecuador, location.location.partially_containedby, South America
Central America, travel.travel_destination.tour_operators, Bunnik Tours
Historia Politica Del Mundo Contemporaneo, book.written_work.subjects, South America
South America, location.location.people_born_here, John De Luca
Amazon, book.written_work.subjects, South America
LocationSouthAmerica, common.image.appears_in_topic_gallery, South America
South America, location.location.events, Perfect Symmetry 2009 Concert Tour
Colombia, location.location.partially_contains, Amazon River
Dark Possession, book.written_work.subjects, South America
m.09wd4_m, common.webpage.topic, South America
m.09w6q7m, common.webpage.topic, South America
Maricoxi, base.mystery.cryptid.area_of_occurrence, South America
South America, location.location.containedby, DVD Region 4
Empire of Brazil, location.location.containedby, South America
m.09w_gv7, common.webpage.topic, South America
Soldiers of Fortune, book.written_work.subjects, South America
Americas, location.location.contains, Antigua and Barbuda
Central America, location.location.contains, Belize
South America, location.location.time_zones, French Guiana Time Zone
South America, book.book_subject.works, In Patagonia
Ecuador, book.written_work.subjects, South America
Southern Ocean, geography.geographical_feature.category, Ocean
Bolivia Time Zone, time.time_zone.locations_in_this_time_zone, South America
Draugas, book.newspaper.circulation_areas, South America
South America, book.book_subject.works, The Voyage Out
Byzantium - The Decline and Fall, book.written_work.subjects, South America
South America, location.location.partially_containedby, Northern Hemisphere
South America, base.schemastaging.context_name.pronunciation, m.0131643w
The Little School, book.written_work.subjects, South America
South America, base.ontologies.ontology_instance.equivalent_instances, m.09kljx0
m.09w6kn4, common.webpage.topic, South America

Answer: Rio Negro
Amazon River
Orinoco