island of Sphacteria
E319445
The island of Sphacteria is a small Greek island off the coast of Pylos, best known as the site of a major Athenian victory over Sparta during the Peloponnesian War.
All labels observed (3)
| Label | Occurrences |
|---|---|
| island of Sphacteria canonical | 2 |
| Spartan garrison on Sphacteria | 1 |
| Sphacteria island | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3004031 — 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: island of Sphacteria Context triple: [Battle of Pylos, associatedWith, island of Sphacteria]
-
A.
Salamis Island
Salamis Island is a Greek island in the Saronic Gulf best known as the site of the pivotal ancient naval Battle of Salamis between the Greek city-states and the Persian Empire.
-
B.
Pentelikon
Pentelikon is a mountain in the Attica region of Greece, historically renowned for its high-quality white marble used in classical Athenian architecture such as the Parthenon.
-
C.
Antipaxos
Antipaxos is a small Greek island in the Ionian Sea, known for its crystal-clear waters, sandy beaches, and vineyards.
-
D.
Melos
Melos is a Greek island in the Aegean Sea, renowned in art history as the discovery site of the famous ancient statue Venus de Milo.
-
E.
Leros
Leros is a Greek island in the southeastern Aegean Sea, known for its natural harbors, World War II history, and traditional villages.
- 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: island of Sphacteria Target entity description: The island of Sphacteria is a small Greek island off the coast of Pylos, best known as the site of a major Athenian victory over Sparta during the Peloponnesian War.
-
A.
Salamis Island
Salamis Island is a Greek island in the Saronic Gulf best known as the site of the pivotal ancient naval Battle of Salamis between the Greek city-states and the Persian Empire.
-
B.
Pentelikon
Pentelikon is a mountain in the Attica region of Greece, historically renowned for its high-quality white marble used in classical Athenian architecture such as the Parthenon.
-
C.
Antipaxos
Antipaxos is a small Greek island in the Ionian Sea, known for its crystal-clear waters, sandy beaches, and vineyards.
-
D.
Melos
Melos is a Greek island in the Aegean Sea, renowned in art history as the discovery site of the famous ancient statue Venus de Milo.
-
E.
Leros
Leros is a Greek island in the southeastern Aegean Sea, known for its natural harbors, World War II history, and traditional villages.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Greek island
ⓘ
battle ⓘ island ⓘ |
| ancientName | Sphakteria ⓘ |
| associatedWith |
Athenian general Demosthenes
ⓘ
linked to:
Demosthenes (general)
Cleon ⓘ Spartan commander Epitadas ⓘ |
| author | Thucydides ⓘ |
| conflict | Athens vs Sparta ⓘ |
| country | Greece ⓘ |
| date | 425 BC ⓘ |
| eventLocation |
Battle of Sphacteria
ⓘ
linked to:
Battle of Pylos
|
| hasAccessBy | boat from Pylos ⓘ |
| hasCulturalSignificance |
Greek military history
ⓘ
Spartan military tradition ⓘ |
| hasFeature |
rugged coastline
ⓘ
sparse vegetation ⓘ steep cliffs ⓘ |
| hasHistoricalSignificance |
Battle of Sphacteria
ⓘ
linked to:
Battle of Pylos
Peloponnesian War ⓘ |
| hasMilitaryHistory | classical antiquity ⓘ |
| hasStrategicImportance | control of access to Pylos harbour ⓘ |
| hasTourismActivity |
boat excursions from Pylos
ⓘ
historical tourism ⓘ |
| knownFor |
Athenian victory over Sparta in 425 BC
ⓘ
capture of Spartan hoplites by Athenians ⓘ |
| locatedIn | Ionian Sea ⓘ |
| locatedInAdministrativeTerritory |
Messenia
ⓘ
Peloponnese ⓘ |
| locatedInBodyOfWater | Mediterranean Sea ⓘ |
| locatedNear |
Navarino Bay
ⓘ
linked to:
Bay of Navarino
Pylos harbour ⓘ
linked to:
Pylos
|
| locatedOffCoastOf | Pylos ⓘ |
| locatedOn | Sphacteria ⓘ |
| mentionedInWork | History of the Peloponnesian War ⓘ |
| modernNameInGreek | Sfaktiria ⓘ |
| nearbySettlement |
Gialova
ⓘ
Pylos ⓘ |
| partOf |
Bay of Pylos
ⓘ
linked to:
Pylos
Peloponnesian War ⓘ historical region of Messenia ⓘ |
| region | Southern Greece ⓘ |
| result | Athenian victory ⓘ |
| separates | Bay of Pylos from the open Ionian Sea ⓘ |
| terrainType | rocky island ⓘ |
| usedDuring | Naval operations in the Peloponnesian War ⓘ |
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: island of Sphacteria Description of subject: The island of Sphacteria is a small Greek island off the coast of Pylos, best known as the site of a major Athenian victory over Sparta during the Peloponnesian War.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: island of Sphacteria
subject linked to:
Spartan commander Epitadas
linked to: island of Sphacteria