islet of Santo Stefano
E1022586
The islet of Santo Stefano is a small Italian island in the Tyrrhenian Sea, known for its historic Bourbon-era prison and its proximity to the island of Ventotene.
All labels observed (1)
| Label | Occurrences |
|---|---|
| islet of Santo Stefano canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13133845 — 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: islet of Santo Stefano Context triple: [Ventotene, hasPart, islet of Santo Stefano]
-
A.
Isola San Biagio
Isola San Biagio is a small, scenic island in Italy’s Lake Garda, known for its accessible shoreline, recreational bathing areas, and picturesque views of the surrounding lake and mountains.
-
B.
San Servolo
San Servolo is a small island in the Venetian Lagoon known for its former monastery and psychiatric hospital, now hosting a university campus, cultural events, and a museum.
-
C.
Massarosa
Massarosa is a Tuscan town and municipality in central Italy known for its lakeside landscapes and proximity to the Versilia coastal area.
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D.
Island of San Pantaleo
The Island of San Pantaleo is a small Mediterranean island off the coast of Sardinia, Italy, known for its archaeological remains and historical sanctuaries.
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E.
Porto Santo Stefano
Porto Santo Stefano is a picturesque coastal town and main port on the Monte Argentario peninsula in Tuscany, Italy, known for its beaches, marina, and ferry connections to nearby islands.
- 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: islet of Santo Stefano Target entity description: The islet of Santo Stefano is a small Italian island in the Tyrrhenian Sea, known for its historic Bourbon-era prison and its proximity to the island of Ventotene.
-
A.
Isola San Biagio
Isola San Biagio is a small, scenic island in Italy’s Lake Garda, known for its accessible shoreline, recreational bathing areas, and picturesque views of the surrounding lake and mountains.
-
B.
San Servolo
San Servolo is a small island in the Venetian Lagoon known for its former monastery and psychiatric hospital, now hosting a university campus, cultural events, and a museum.
-
C.
Massarosa
Massarosa is a Tuscan town and municipality in central Italy known for its lakeside landscapes and proximity to the Versilia coastal area.
-
D.
Island of San Pantaleo
The Island of San Pantaleo is a small Mediterranean island off the coast of Sardinia, Italy, known for its archaeological remains and historical sanctuaries.
-
E.
Porto Santo Stefano
Porto Santo Stefano is a picturesque coastal town and main port on the Monte Argentario peninsula in Tuscany, Italy, known for its beaches, marina, and ferry connections to nearby islands.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
Italian island
ⓘ
Mediterranean island ⓘ island ⓘ |
| archipelago | Pontine Islands ⓘ |
| country | Italy ⓘ |
| hasAccessibility | reachable by boat from Ventotene ⓘ |
| hasBuilding | circular prison complex ⓘ |
| hasFormerUse | Bourbon prison island ⓘ |
| hasHeritage | historic prison architecture ⓘ |
| hasHistoricSite |
Santo Stefano prison
ⓘ
linked to:
Santo Stefano Prison
|
| hasLanguage | Italian ⓘ |
| hasNotableFeature | Bourbon-era prison ⓘ |
| hasStatus | uninhabited or sparsely inhabited ⓘ |
| knownFor |
historic Bourbon-era prison
ⓘ
proximity to Ventotene ⓘ |
| locatedIn |
Lazio
ⓘ
Mediterranean Sea ⓘ Pontine Islands ⓘ Province of Latina ⓘ Tyrrhenian Sea ⓘ |
| locatedNear | Ventotene ⓘ |
| nearbyIsland | Ventotene ⓘ |
| partOf |
Italy
ⓘ
Tyrrhenian Sea region ⓘ
linked to:
Tyrrhenian region
|
| politicalSubdivision |
Lazio
ⓘ
Province of Latina ⓘ |
| region | Lazio ⓘ |
| sea | Tyrrhenian Sea ⓘ |
| usedFor |
detention of political prisoners
ⓘ
penal colony ⓘ |
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: islet of Santo Stefano Description of subject: The islet of Santo Stefano is a small Italian island in the Tyrrhenian Sea, known for its historic Bourbon-era prison and its proximity to the island of Ventotene.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.