Bologna–Pistoia railway
E524959
The Bologna–Pistoia railway is a major Italian rail line crossing the Apennines to connect the Emilia-Romagna city of Bologna with Pistoia in Tuscany.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Bologna–Pistoia railway canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5483466 — 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: Bologna–Pistoia railway Context triple: [Bologna Centrale railway station, isPartOf, Bologna–Pistoia railway]
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A.
Bologna–Florence railway
The Bologna–Florence railway is a major Italian rail line crossing the Apennine Mountains to connect the northern city of Bologna with Florence in central Italy, serving as a key corridor between northern and southern Italy.
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B.
Bologna–Ancona railway
The Bologna–Ancona railway is a major Italian rail line connecting the inland city of Bologna with the Adriatic coastal city of Ancona, serving as an important corridor for both passenger and freight traffic.
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C.
Empoli–Siena railway
The Empoli–Siena railway is a regional rail line in Tuscany, Italy, connecting the cities of Empoli and Siena and serving several intermediate towns including Certaldo.
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D.
Milan–Bologna railway
The Milan–Bologna railway is a major Italian mainline rail corridor connecting the northern cities of Milan and Bologna and forming a key segment of the country’s high-capacity transport network.
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E.
Bologna–Padua railway
The Bologna–Padua railway is a major Italian rail line in northern Italy that connects the cities of Bologna and Padua, serving as an important corridor for both regional and long-distance passenger and freight traffic.
- 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: Bologna–Pistoia railway Target entity description: The Bologna–Pistoia railway is a major Italian rail line crossing the Apennines to connect the Emilia-Romagna city of Bologna with Pistoia in Tuscany.
-
A.
Bologna–Florence railway
The Bologna–Florence railway is a major Italian rail line crossing the Apennine Mountains to connect the northern city of Bologna with Florence in central Italy, serving as a key corridor between northern and southern Italy.
-
B.
Bologna–Ancona railway
The Bologna–Ancona railway is a major Italian rail line connecting the inland city of Bologna with the Adriatic coastal city of Ancona, serving as an important corridor for both passenger and freight traffic.
-
C.
Empoli–Siena railway
The Empoli–Siena railway is a regional rail line in Tuscany, Italy, connecting the cities of Empoli and Siena and serving several intermediate towns including Certaldo.
-
D.
Milan–Bologna railway
The Milan–Bologna railway is a major Italian mainline rail corridor connecting the northern cities of Milan and Bologna and forming a key segment of the country’s high-capacity transport network.
-
E.
Bologna–Padua railway
The Bologna–Padua railway is a major Italian rail line in northern Italy that connects the cities of Bologna and Padua, serving as an important corridor for both regional and long-distance passenger and freight traffic.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf | railway line ⓘ |
| alsoKnownAs | Porrettana railway NERFINISHED ⓘ |
| belongsToCorridor | regional rail services between Emilia-Romagna and Tuscany ⓘ |
| connects |
Bologna
NERFINISHED
ⓘ
Pistoia NERFINISHED ⓘ |
| constructionStarted | 1851 ⓘ |
| country | Italy ⓘ |
| crosses | Apennine Mountains NERFINISHED ⓘ |
| electrification | 3 kV DC overhead line ⓘ |
| electrified | yes ⓘ |
| endStation |
Bologna Centrale railway station
NERFINISHED
ⓘ
Pistoia railway station NERFINISHED ⓘ |
| hasBridgeOver | Reno river NERFINISHED ⓘ |
| hasGradient | steep gradients in Apennine section ⓘ |
| hasStructure | Porretta railway tunnel NERFINISHED ⓘ |
| historicalRole | important north–south route before opening of Direttissima Bologna–Florence line ⓘ |
| historicalSignificance | first trans-Apennine railway connection between northern and central Italy ⓘ |
| length | about 99 km ⓘ |
| lineNumber | Porrettana NERFINISHED ⓘ |
| locatedIn | Apennines NERFINISHED ⓘ |
| locatedInAdministrativeTerritory |
Emilia-Romagna
NERFINISHED
ⓘ
Tuscany NERFINISHED ⓘ |
| opened | 1864 ⓘ |
| operator | Rete Ferroviaria Italiana NERFINISHED ⓘ |
| owner | Rete Ferroviaria Italiana NERFINISHED ⓘ |
| partOf |
Bologna node of Italian railways
NERFINISHED
ⓘ
Italian railway network NERFINISHED ⓘ |
| passesThrough |
Porretta Terme
NERFINISHED
ⓘ
Sambuca Pistoiese NERFINISHED ⓘ Sasso Marconi NERFINISHED ⓘ Vergato NERFINISHED ⓘ |
| primaryPassengerOperator | Trenitalia NERFINISHED ⓘ |
| regionServed |
Metropolitan City of Bologna
NERFINISHED
ⓘ
Province of Pistoia NERFINISHED ⓘ |
| safetySystem | Italian SCMT train protection system ⓘ |
| startPoint | Bologna NERFINISHED ⓘ |
| status | in operation ⓘ |
| terrainType | mountain railway ⓘ |
| trackConfiguration | single track on most of the route ⓘ |
| usedFor |
freight transport
ⓘ
passenger transport ⓘ |
| usesGauge | standard gauge ⓘ |
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: Bologna–Pistoia railway Description of subject: The Bologna–Pistoia railway is a major Italian rail line crossing the Apennines to connect the Emilia-Romagna city of Bologna with Pistoia in Tuscany.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.