Maracaibo Basin
E647533
The Maracaibo Basin is a large sedimentary basin in northwestern Venezuela known for its rich petroleum reserves and encompassing Lake Maracaibo.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Lake Maracaibo basin | 2 |
| Catatumbo Basin | 1 |
| Maracaibo Basin canonical | 1 |
| Maracaibo Lake basin | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7157639 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Maracaibo Basin Context triple: [Lake Maracaibo, locatedIn, Maracaibo Basin]
-
A.
Orinoco Basin
The Orinoco Basin is a vast tropical river basin in northern South America, encompassing large parts of Venezuela and Colombia and supporting extensive rainforest, wetlands, and rich biodiversity.
-
B.
Venezuelan Basin
The Venezuelan Basin is a deep oceanic basin in the southern Caribbean, lying off the coasts of Venezuela and nearby islands and forming one of the major structural depressions of the Caribbean Sea.
-
C.
Orinoco Belt
The Orinoco Belt is a vast oil-rich region in eastern Venezuela known for containing one of the world’s largest extra-heavy crude oil reserves.
-
D.
Llanos de Moxos
Llanos de Moxos is a vast seasonally flooded tropical savanna and wetland region in northern Bolivia, known for its rich biodiversity and extensive pre-Columbian earthworks.
-
E.
Orinoco Delta
The Orinoco Delta is a vast, swampy river delta in eastern Venezuela where the Orinoco River empties into the Atlantic Ocean, characterized by a complex network of distributaries and rich biodiversity.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Maracaibo Basin Target entity description: The Maracaibo Basin is a large sedimentary basin in northwestern Venezuela known for its rich petroleum reserves and encompassing Lake Maracaibo.
-
A.
Orinoco Basin
The Orinoco Basin is a vast tropical river basin in northern South America, encompassing large parts of Venezuela and Colombia and supporting extensive rainforest, wetlands, and rich biodiversity.
-
B.
Venezuelan Basin
The Venezuelan Basin is a deep oceanic basin in the southern Caribbean, lying off the coasts of Venezuela and nearby islands and forming one of the major structural depressions of the Caribbean Sea.
-
C.
Orinoco Belt
The Orinoco Belt is a vast oil-rich region in eastern Venezuela known for containing one of the world’s largest extra-heavy crude oil reserves.
-
D.
Llanos de Moxos
Llanos de Moxos is a vast seasonally flooded tropical savanna and wetland region in northern Bolivia, known for its rich biodiversity and extensive pre-Columbian earthworks.
-
E.
Orinoco Delta
The Orinoco Delta is a vast, swampy river delta in eastern Venezuela where the Orinoco River empties into the Atlantic Ocean, characterized by a complex network of distributaries and rich biodiversity.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
petroleum basin
ⓘ
sedimentary basin ⓘ |
| administrativeRegion |
Zulia State
NERFINISHED
ⓘ
parts of Mérida State ⓘ parts of Trujillo State ⓘ parts of Táchira State ⓘ |
| borderedBy |
Andes Mountains
NERFINISHED
ⓘ
Sierra de Perijá NERFINISHED ⓘ Venezuelan coastal ranges NERFINISHED ⓘ |
| climate | tropical ⓘ |
| contains |
Lake Maracaibo
NERFINISHED
ⓘ
offshore oil fields in Lake Maracaibo ⓘ onshore oil fields ⓘ |
| containsStructure |
fault-bounded blocks
ⓘ
folds ⓘ thrust faults ⓘ |
| country | Venezuela ⓘ |
| drainageBasinOf | Lake Maracaibo NERFINISHED ⓘ |
| geologicalAge |
Cenozoic
ⓘ
Mesozoic NERFINISHED ⓘ |
| hasBasinType |
intracratonic basin
ⓘ
strike-slip influenced basin ⓘ |
| hasCityOnMargin | Maracaibo NERFINISHED ⓘ |
| hasEconomicImportance |
key component of Venezuelan petroleum industry
ⓘ
major oil-producing region of Venezuela ⓘ |
| hasEnvironmentalIssue |
oil pollution risk in Lake Maracaibo
ⓘ
subsidence related to hydrocarbon extraction ⓘ |
| hasExplorationHistory | one of the earliest developed oil basins in Latin America ⓘ |
| hasHydrology | connected to Gulf of Venezuela via Tablazo Strait NERFINISHED ⓘ |
| hasNaturalResource |
natural gas
ⓘ
petroleum ⓘ |
| hasOperator | Petróleos de Venezuela S.A. NERFINISHED ⓘ |
| hasSedimentFill |
carbonates
ⓘ
clastic sediments ⓘ |
| hasStratigraphy | thick sedimentary sequence ⓘ |
| hydrocarbonSystem |
multiple petroleum source rocks
ⓘ
stratigraphic traps ⓘ structural traps ⓘ |
| knownFor | rich petroleum reserves ⓘ |
| languageOfRegion | Spanish ⓘ |
| locatedIn | northwestern Venezuela ⓘ |
| majorIndustry |
oil production
ⓘ
refining and petrochemicals ⓘ |
| overlies |
Paleozoic basement
ⓘ
Precambrian basement ⓘ |
| partOf |
Caribbean-South American plate boundary region
NERFINISHED
ⓘ
South America NERFINISHED ⓘ |
| tectonicSetting | foreland basin ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Maracaibo Basin Description of subject: The Maracaibo Basin is a large sedimentary basin in northwestern Venezuela known for its rich petroleum reserves and encompassing Lake Maracaibo.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Maracaibo Lake basin
this entity surface form:
Lake Maracaibo basin
this entity surface form:
Lake Maracaibo basin
this entity surface form:
Catatumbo Basin