Viaducto La Polvorilla
E1006018
Viaducto La Polvorilla is a famous high-altitude railway viaduct in Argentina, known as a key engineering landmark on the Tren a las Nubes route through the Andes.
All labels observed (2)
| Label | Occurrences |
|---|---|
| La Polvorilla viaduct | 2 |
| Viaducto La Polvorilla canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12842743 — 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: Viaducto La Polvorilla Context triple: [San Antonio de los Cobres, near, Viaducto La Polvorilla]
-
A.
Vilaseca Bridge
Vilaseca Bridge is a historic steel truss bridge spanning the Connecticut River between Bellows Falls, Vermont, and Walpole, New Hampshire.
-
B.
Viaducto Río Becerra
Viaducto Río Becerra is a major elevated roadway and traffic artery in Mexico City that runs near the Extremadura Insurgentes area.
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C.
Puente Mayor de Toro
Puente Mayor de Toro is a historic stone bridge in the town of Toro, Spain, notable for its medieval architecture and role in crossing the Duero River.
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D.
Almondell Viaduct
Almondell Viaduct is a historic stone railway viaduct located within Almondell and Calderwood Country Park in West Lothian, Scotland.
-
E.
Puente del Humilladero
Puente del Humilladero is a historic colonial-era stone bridge and architectural landmark in Popayán, Colombia.
- 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: Viaducto La Polvorilla Target entity description: Viaducto La Polvorilla is a famous high-altitude railway viaduct in Argentina, known as a key engineering landmark on the Tren a las Nubes route through the Andes.
-
A.
Vilaseca Bridge
Vilaseca Bridge is a historic steel truss bridge spanning the Connecticut River between Bellows Falls, Vermont, and Walpole, New Hampshire.
-
B.
Viaducto Río Becerra
Viaducto Río Becerra is a major elevated roadway and traffic artery in Mexico City that runs near the Extremadura Insurgentes area.
-
C.
Puente Mayor de Toro
Puente Mayor de Toro is a historic stone bridge in the town of Toro, Spain, notable for its medieval architecture and role in crossing the Duero River.
-
D.
Almondell Viaduct
Almondell Viaduct is a historic stone railway viaduct located within Almondell and Calderwood Country Park in West Lothian, Scotland.
-
E.
Puente del Humilladero
Puente del Humilladero is a historic colonial-era stone bridge and architectural landmark in Popayán, Colombia.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
bridge
ⓘ
railway viaduct ⓘ tourist attraction ⓘ |
| accessFromCity | Salta NERFINISHED ⓘ |
| constructionMethod | steel trestle on concrete foundations ⓘ |
| constructionStartDate | 1929 ⓘ |
| country | Argentina ⓘ |
| crosses | La Polvorilla gorge NERFINISHED ⓘ |
| designedBy | Richard Fontaine Maury NERFINISHED ⓘ |
| elevation | about 4220 metres above sea level ⓘ |
| gauge | 1,000 mm metre gauge ⓘ |
| hasClimate | high-altitude arid climate ⓘ |
| hasPhotographicIconStatus | symbol of Tren a las Nubes ⓘ |
| hasRailwayService | Tren a las Nubes tourist train NERFINISHED ⓘ |
| hasSafetyFeature | speed restrictions for trains ⓘ |
| hasViewOf |
Andean plateau
NERFINISHED
ⓘ
surrounding mountains ⓘ |
| height | about 63 metres ⓘ |
| heritageStatus | important engineering landmark in Argentina ⓘ |
| isHighAltitudeStructure | true ⓘ |
| knownFor |
Andean mountain scenery
ⓘ
high-altitude railway engineering ⓘ |
| languageOfToponym | Spanish ⓘ |
| length | about 224 metres ⓘ |
| locatedIn |
Andes
ⓘ
Salta Province NERFINISHED ⓘ |
| locatedInRegion | Puna de Atacama NERFINISHED ⓘ |
| locatedNear | San Antonio de los Cobres NERFINISHED ⓘ |
| locatedOnContinent | South America ⓘ |
| locatedOnLine | Salta–Antofagasta railway NERFINISHED ⓘ |
| material | steel ⓘ |
| nameMeaning | La Polvorilla Viaduct NERFINISHED ⓘ |
| nearBorderWith | Chile NERFINISHED ⓘ |
| numberOfSpans | 9 ⓘ |
| opened | 1932 ⓘ |
| ownerCountry | Argentina NERFINISHED ⓘ |
| partOf |
General Manuel Belgrano Railway
NERFINISHED
ⓘ
Tren a las Nubes route NERFINISHED ⓘ |
| railwayFunction | carries single-track railway ⓘ |
| railwayOperator | Trenes Argentinos (for regular operations context) NERFINISHED ⓘ |
| safetyNote | visitors may experience altitude sickness ⓘ |
| slopeContext | located on a curved section of track ⓘ |
| structureType | trestle bridge ⓘ |
| touristActivity |
photography
ⓘ
scenic train rides ⓘ |
| transportType | railway infrastructure ⓘ |
| usedFor |
rail transport
ⓘ
tourism ⓘ |
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: Viaducto La Polvorilla Description of subject: Viaducto La Polvorilla is a famous high-altitude railway viaduct in Argentina, known as a key engineering landmark on the Tren a las Nubes route through the Andes.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
La Polvorilla viaduct
this entity surface form:
La Polvorilla viaduct