Cagliari–Iglesias railway
E1034190
The Cagliari–Iglesias railway is a main regional rail line in Sardinia, Italy, connecting the island’s capital Cagliari with the southwestern town of Iglesias.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Cagliari–Carbonia railway | 1 |
| Cagliari–Iglesias railway canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13281105 — 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: Cagliari–Iglesias railway Context triple: [Cagliari railway station, terminusOf, Cagliari–Iglesias railway]
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A.
Cagliari–Golfo Aranci railway
The Cagliari–Golfo Aranci railway is a major rail line in Sardinia, Italy, connecting the island’s capital Cagliari with the northeastern coastal area near Olbia and the port of Golfo Aranci.
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B.
Palermo–Trapani railway
The Palermo–Trapani railway is a regional rail line in Sicily that connects the city of Palermo with the western coastal city of Trapani, serving several intermediate towns along the route.
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C.
Palermo–Messina railway
The Palermo–Messina railway is a major rail line in northern Sicily that connects the regional capital Palermo with the important port city of Messina along the island’s northern coast.
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D.
Bari–Taranto railway
The Bari–Taranto railway is a major rail line in southern Italy that links the Adriatic coastal city of Bari with the Ionian port city of Taranto, serving as an important regional transport corridor in Apulia.
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E.
Catania–Palermo railway
The Catania–Palermo railway is a major rail line in Sicily that connects the island’s two largest cities, Catania and Palermo, crossing its mountainous interior.
- 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: Cagliari–Iglesias railway Target entity description: The Cagliari–Iglesias railway is a main regional rail line in Sardinia, Italy, connecting the island’s capital Cagliari with the southwestern town of Iglesias.
-
A.
Cagliari–Golfo Aranci railway
The Cagliari–Golfo Aranci railway is a major rail line in Sardinia, Italy, connecting the island’s capital Cagliari with the northeastern coastal area near Olbia and the port of Golfo Aranci.
-
B.
Palermo–Trapani railway
The Palermo–Trapani railway is a regional rail line in Sicily that connects the city of Palermo with the western coastal city of Trapani, serving several intermediate towns along the route.
-
C.
Palermo–Messina railway
The Palermo–Messina railway is a major rail line in northern Sicily that connects the regional capital Palermo with the important port city of Messina along the island’s northern coast.
-
D.
Bari–Taranto railway
The Bari–Taranto railway is a major rail line in southern Italy that links the Adriatic coastal city of Bari with the Ionian port city of Taranto, serving as an important regional transport corridor in Apulia.
-
E.
Catania–Palermo railway
The Catania–Palermo railway is a major rail line in Sicily that connects the island’s two largest cities, Catania and Palermo, crossing its mountainous interior.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
railway line
ⓘ
regional rail line ⓘ |
| connects |
Cagliari
NERFINISHED
ⓘ
Iglesias NERFINISHED ⓘ |
| continent | Europe ⓘ |
| country | Italy ⓘ |
| electrification | non‑electrified ⓘ |
| endPoint | Iglesias NERFINISHED ⓘ |
| gauge | standard gauge ⓘ |
| hasConnectionAt |
Cagliari railway station
NERFINISHED
ⓘ
Decimomannu railway station NERFINISHED ⓘ |
| hasStation |
Cagliari railway station
NERFINISHED
ⓘ
Decimomannu railway station NERFINISHED ⓘ Iglesias railway station NERFINISHED ⓘ Villacidro–San Gavino area (intermediate stops) ⓘ |
| languageOfName | Italian ⓘ |
| locatedIn |
Metropolitan City of Cagliari
NERFINISHED
ⓘ
Province of South Sardinia NERFINISHED ⓘ Sardinia NERFINISHED ⓘ southwestern Sardinia ⓘ |
| locatedOnIsland | Sardinia NERFINISHED ⓘ |
| namedAfter |
Cagliari
NERFINISHED
ⓘ
Iglesias NERFINISHED ⓘ |
| operator | Trenitalia NERFINISHED ⓘ |
| owner | Rete Ferroviaria Italiana NERFINISHED ⓘ |
| partOf | Sardinian railway network NERFINISHED ⓘ |
| primaryFunction |
connect Cagliari with southwestern Sardinia
ⓘ
regional passenger transport ⓘ |
| railNetwork | Italian railway network ⓘ |
| railwayLineType | heavy rail ⓘ |
| regionServed | Sardinia NERFINISHED ⓘ |
| serviceType |
passenger service
ⓘ
regional rail ⓘ |
| startPoint | Cagliari NERFINISHED ⓘ |
| terminus |
Cagliari railway station
NERFINISHED
ⓘ
Iglesias railway station NERFINISHED ⓘ |
| trackConfiguration | single track ⓘ |
| transportMode | rail ⓘ |
| usedFor |
commuter traffic
ⓘ
regional travel ⓘ |
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: Cagliari–Iglesias railway Description of subject: The Cagliari–Iglesias railway is a main regional rail line in Sardinia, Italy, connecting the island’s capital Cagliari with the southwestern town of Iglesias.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Cagliari–Carbonia railway