Tartu–Koidula railway
E791319
The Tartu–Koidula railway is a rail line in southeastern Estonia that connects the city of Tartu with the border area near Koidula, serving both passenger and freight traffic.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Tartu–Koidula railway canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9275062 — 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: Tartu–Koidula railway Context triple: [Tartu railway station, railwayLine, Tartu–Koidula railway]
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A.
Tartu–Valga railway
The Tartu–Valga railway is a rail line in Estonia connecting the city of Tartu with the border town of Valga, forming part of an important north–south route toward Latvia.
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B.
Tallinn–Tartu railway
The Tallinn–Tartu railway is a major rail line in Estonia connecting the capital city Tallinn with the university city of Tartu, serving as one of the country's primary passenger and freight corridors.
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C.
Riga–Tukums railway
The Riga–Tukums railway is a key rail line in Latvia linking the capital Riga with the town of Tukums and serving as an important regional passenger and freight route.
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D.
Riga–Jelgava railway
The Riga–Jelgava railway is a key rail line in Latvia that links the capital city Riga with the nearby city of Jelgava, serving both passenger and freight traffic.
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E.
Riga–Daugavpils railway
The Riga–Daugavpils railway is a major rail line in Latvia that links the capital Riga with the country’s second-largest city, Daugavpils, serving as an important route for both passenger and freight transport.
- 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: Tartu–Koidula railway Target entity description: The Tartu–Koidula railway is a rail line in southeastern Estonia that connects the city of Tartu with the border area near Koidula, serving both passenger and freight traffic.
-
A.
Tartu–Valga railway
The Tartu–Valga railway is a rail line in Estonia connecting the city of Tartu with the border town of Valga, forming part of an important north–south route toward Latvia.
-
B.
Tallinn–Tartu railway
The Tallinn–Tartu railway is a major rail line in Estonia connecting the capital city Tallinn with the university city of Tartu, serving as one of the country's primary passenger and freight corridors.
-
C.
Riga–Tukums railway
The Riga–Tukums railway is a key rail line in Latvia linking the capital Riga with the town of Tukums and serving as an important regional passenger and freight route.
-
D.
Riga–Jelgava railway
The Riga–Jelgava railway is a key rail line in Latvia that links the capital city Riga with the nearby city of Jelgava, serving both passenger and freight traffic.
-
E.
Riga–Daugavpils railway
The Riga–Daugavpils railway is a major rail line in Latvia that links the capital Riga with the country’s second-largest city, Daugavpils, serving as an important route for both passenger and freight transport.
- F. None of above. chosen
Statements (26)
| Predicate | Object |
|---|---|
| instanceOf |
rail transport infrastructure
ⓘ
railway line ⓘ |
| connects |
Koidula border area
ⓘ
linked to:
Koidula
Tartu ⓘ |
| country | Estonia ⓘ |
| electrification | not electrified ⓘ |
| endPoint | Koidula ⓘ |
| gauge | 1520 mm ⓘ |
| hasBorderFunction | Estonia–Russia border area ⓘ |
| locatedIn | southeastern Estonia ⓘ |
| locatedInTimeZone |
Eastern European Summer Time
ⓘ
Eastern European Time ⓘ |
| operator | Elron ⓘ |
| partOf | Estonian railway network ⓘ |
| passesThrough |
Põlva County
ⓘ
Võru County ⓘ |
| primaryUse |
freight traffic
ⓘ
passenger traffic ⓘ |
| regionServed |
Põlva County
ⓘ
Tartu County ⓘ Võru County ⓘ |
| startPoint | Tartu ⓘ |
| terminusStation |
Koidula railway station
ⓘ
Tartu railway station ⓘ |
| trackConfiguration | single track ⓘ |
| uses | Russian 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: Tartu–Koidula railway Description of subject: The Tartu–Koidula railway is a rail line in southeastern Estonia that connects the city of Tartu with the border area near Koidula, serving both passenger and freight traffic.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.