Isthmus of Corinth
E89270
The Isthmus of Corinth is the narrow land bridge in Greece that links the Peloponnese peninsula to the mainland and separates the Gulf of Corinth from the Saronic Gulf.
All labels observed (7)
| Label | Occurrences |
|---|---|
| Isthmus of Corinth canonical | 25 |
| Corinthian Isthmus | 1 |
| Isthmus | 1 |
| Isthmus of Corinth (via canal nearby waters) | 1 |
| Isthmus of Corinth area | 1 |
| Isthmus of Corinth land bridge | 1 |
| Isthmus of Corinth vicinity | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T729872 — 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: Isthmus of Corinth Context triple: [Peloponnese, connectedBy, Isthmus of Corinth]
-
A.
Strait of Kythira
The Strait of Kythira is a narrow maritime passage between the Peloponnese and the island of Kythira in southern Greece, serving as an important route between the Aegean and Ionian Seas.
-
B.
Strait of Messina
The Strait of Messina is a narrow waterway between the island of Sicily and mainland Italy, known for its strong currents and strategic maritime importance in the Mediterranean.
-
C.
Dardanelles
The Dardanelles is a narrow, strategically vital strait in northwestern Turkey that connects the Aegean Sea to the Sea of Marmara and separates the European and Asian parts of the country.
-
D.
Strait of Gibraltar
The Strait of Gibraltar is the narrow waterway between southern Spain and northern Morocco that links the Atlantic Ocean with the Mediterranean Sea and separates Europe from Africa.
-
E.
Isthmus of Suez
The Isthmus of Suez is the narrow land bridge between Africa and Asia in Egypt that serves as a crucial junction for global trade and navigation.
- 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: Isthmus of Corinth Target entity description: The Isthmus of Corinth is the narrow land bridge in Greece that links the Peloponnese peninsula to the mainland and separates the Gulf of Corinth from the Saronic Gulf.
-
A.
Strait of Kythira
The Strait of Kythira is a narrow maritime passage between the Peloponnese and the island of Kythira in southern Greece, serving as an important route between the Aegean and Ionian Seas.
-
B.
Strait of Messina
The Strait of Messina is a narrow waterway between the island of Sicily and mainland Italy, known for its strong currents and strategic maritime importance in the Mediterranean.
-
C.
Dardanelles
The Dardanelles is a narrow, strategically vital strait in northwestern Turkey that connects the Aegean Sea to the Sea of Marmara and separates the European and Asian parts of the country.
-
D.
Strait of Gibraltar
The Strait of Gibraltar is the narrow waterway between southern Spain and northern Morocco that links the Atlantic Ocean with the Mediterranean Sea and separates Europe from Africa.
-
E.
Isthmus of Suez
The Isthmus of Suez is the narrow land bridge between Africa and Asia in Egypt that serves as a crucial junction for global trade and navigation.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
isthmus
ⓘ
landform ⓘ |
| ancientName |
Isthmus of Corinth
self-linksurface differs
ⓘ
surface form:
Isthmus
|
| ancientPortageRoad | Diolkos ⓘ |
| approximateWidth | about 6 kilometers at narrowest point ⓘ |
| belongsTo |
Periphery of Attica (adjacent region)
ⓘ
Peloponnese ⓘ
surface form:
Periphery of Peloponnese
|
| canalCompletedIn | 1893 ⓘ |
| connects |
Greek mainland
ⓘ
Peloponnese ⓘ |
| country | Greece ⓘ |
| crossedBy |
highway connecting Athens and Patras via Corinth
ⓘ
railway connecting Athens and Peloponnese ⓘ |
| culturalSignificance | site of ancient Isthmian Games vicinity ⓘ |
| geologicalType | narrow land bridge ⓘ |
| hasCanal | Corinth Canal ⓘ |
| hasEconomicRole | maritime trade route via Corinth Canal ⓘ |
| hasElevation | low-lying coastal terrain ⓘ |
| hasEngineeringProject |
Corinth Canal
ⓘ
surface form:
Corinth Canal excavation
|
| hasHistoricalUse | trade and military transit corridor ⓘ |
| hasInfrastructure | Corinth Canal ⓘ |
| hasStrategicRole | military control point in antiquity ⓘ |
| hasStructure | Diolkos ⓘ |
| hasTourismAttraction |
Corinth Canal viewpoints
ⓘ
Diolkos ⓘ
surface form:
remains of Diolkos
|
| hasTransportationRoute |
railway line between Athens and Peloponnese
ⓘ
road network between Athens and Peloponnese ⓘ |
| historicalRegion |
Greek Antiquity
ⓘ
surface form:
Ancient Greece
|
| knownFor | shortest land connection between Aegean and Ionian maritime routes ⓘ |
| locatedIn | Corinthia ⓘ |
| locatedNear |
Corinth
ⓘ
surface form:
City of Corinth
|
| locatedOnContinent | Europe ⓘ |
| nearCity |
Corinth
ⓘ
Loutraki ⓘ |
| nearSanctuary |
Temple of Poseidon at Isthmia
ⓘ
surface form:
Sanctuary of Poseidon at Isthmia
|
| nearSea |
Aegean Sea
ⓘ
Ionian Sea ⓘ |
| partOf | Greek peninsula system ⓘ |
| region |
central Greece
ⓘ
surface form:
Central Greece
|
| separates |
Gulf of Corinth
ⓘ
Saronic Gulf ⓘ |
| separatesRegion |
central Greece
ⓘ
surface form:
Central Greece from Peloponnese
|
| strategicImportance | controls land access to Peloponnese ⓘ |
| usedFor | overland portage of ships in antiquity ⓘ |
| waterBodyOnEast | Saronic Gulf ⓘ |
| waterBodyOnWest | Gulf of Corinth ⓘ |
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: Isthmus of Corinth Description of subject: The Isthmus of Corinth is the narrow land bridge in Greece that links the Peloponnese peninsula to the mainland and separates the Gulf of Corinth from the Saronic Gulf.
Referenced by (31)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Isthmus of Corinth land bridge
this entity surface form:
Isthmus of Corinth (via canal nearby waters)
this entity surface form:
Corinthian Isthmus
this entity surface form:
Isthmus
this entity surface form:
Isthmus of Corinth vicinity