Triple
T20264752
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Porto Velho |
E498934
|
entity |
| Predicate | hasRailwayTerminus |
P21210
|
FINISHED |
| Object | Madeira-Mamoré Railway |
—
|
NE NERFINISHED |
How this triple was built (3 steps)
Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.
NER
Named-entity recognition
gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Madeira-Mamoré Railway | Statement: [Porto Velho, hasRailwayTerminus, Madeira-Mamoré Railway]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Madeira-Mamoré Railway Context triple: [Porto Velho, hasRailwayTerminus, Madeira-Mamoré Railway]
-
A.
Antofagasta–Bolivia Railway
The Antofagasta–Bolivia Railway is a historic trans-Andean rail line linking Chile’s Pacific coast with Bolivia’s interior, primarily built to transport minerals from the Andean region to port.
-
B.
Arica–La Paz Railway
The Arica–La Paz Railway is a historic trans-Andean rail line connecting the Chilean port city of Arica with Bolivia’s capital, La Paz, primarily built to facilitate Bolivian access to the Pacific Ocean.
-
C.
Ecuadorian Railway
The Ecuadorian Railway is a historic rail network in Ecuador famed for its dramatic Andean routes, including the steep “Devil’s Nose” section that connects highland towns like Alausí.
-
D.
Tacna–Arica railway
The Tacna–Arica railway is a historic international rail line connecting the Peruvian city of Tacna with the Chilean port of Arica across the Atacama Desert.
-
E.
General Urquiza Railway
The General Urquiza Railway is a major Argentine railway line that historically connected Buenos Aires with the country's northeastern regions, playing a key role in 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: Madeira-Mamoré Railway Target entity description: The Madeira-Mamoré Railway is a historic Amazonian railroad in Brazil, famed for its arduous construction through dense rainforest and disease-ridden terrain to support regional rubber transport in the early 20th century.
-
A.
Antofagasta–Bolivia Railway
The Antofagasta–Bolivia Railway is a historic trans-Andean rail line linking Chile’s Pacific coast with Bolivia’s interior, primarily built to transport minerals from the Andean region to port.
-
B.
Arica–La Paz Railway
The Arica–La Paz Railway is a historic trans-Andean rail line connecting the Chilean port city of Arica with Bolivia’s capital, La Paz, primarily built to facilitate Bolivian access to the Pacific Ocean.
-
C.
Ecuadorian Railway
The Ecuadorian Railway is a historic rail network in Ecuador famed for its dramatic Andean routes, including the steep “Devil’s Nose” section that connects highland towns like Alausí.
-
D.
Tacna–Arica railway
The Tacna–Arica railway is a historic international rail line connecting the Peruvian city of Tacna with the Chilean port of Arica across the Atacama Desert.
-
E.
General Urquiza Railway
The General Urquiza Railway is a major Argentine railway line that historically connected Buenos Aires with the country's northeastern regions, playing a key role in passenger and freight transport.
- F. None of above. chosen
Provenance (2 batches)
The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.
| Step | Stage | Batch ID | Status | When |
|---|---|---|---|---|
| creating | Elicitation | batch_69da6275fa6c8190952924930adee150 |
completed | April 11, 2026, 3:02 p.m. |
| NER | Named-entity recognition | batch_69e674ce27688190b31d7a6c98d3ec5e |
completed | April 20, 2026, 6:47 p.m. |
Created at: April 11, 2026, 11:41 p.m.