Triple
T6237304
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | South African national rail network |
E139507
|
entity |
| Predicate | abbreviation |
P43
|
FINISHED |
| Object |
PRASA
PRASA is South Africa’s state-owned passenger rail agency responsible for operating and managing most of the country’s commuter and long-distance passenger train services.
|
E577525
|
NE FINISHED |
How this triple was built (4 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: PRASA | Statement: [South African national rail network, abbreviation, PRASA]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: PRASA Context triple: [South African national rail network, abbreviation, PRASA]
-
A.
PRASA
PRASA is the public corporation responsible for providing water and wastewater services throughout Puerto Rico.
-
B.
KTM Komuter
KTM Komuter is a Malaysian commuter rail service operating in the Greater Kuala Lumpur area and surrounding regions, providing frequent, affordable suburban train connections.
-
C.
Jakarta BRT (TransJakarta)
Jakarta BRT (TransJakarta) is a bus rapid transit system in Indonesia’s capital that uses dedicated lanes and high-capacity buses to provide mass public transportation across the city.
-
D.
Palembang LRT
Palembang LRT is an elevated light rail transit system in Palembang, Indonesia, built to improve urban mobility and support major events such as the 2018 Asian Games.
-
E.
PNR Metro Commuter Line
The PNR Metro Commuter Line is a suburban rail service in Metro Manila operated by the Philippine National Railways, providing commuter train connections across key areas of the capital region.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: PRASA Triple: [South African national rail network, abbreviation, PRASA]
Generated description
PRASA is South Africa’s state-owned passenger rail agency responsible for operating and managing most of the country’s commuter and long-distance passenger train services.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: PRASA Target entity description: PRASA is South Africa’s state-owned passenger rail agency responsible for operating and managing most of the country’s commuter and long-distance passenger train services.
-
A.
PRASA
PRASA is the public corporation responsible for providing water and wastewater services throughout Puerto Rico.
-
B.
KTM Komuter
KTM Komuter is a Malaysian commuter rail service operating in the Greater Kuala Lumpur area and surrounding regions, providing frequent, affordable suburban train connections.
-
C.
Jakarta BRT (TransJakarta)
Jakarta BRT (TransJakarta) is a bus rapid transit system in Indonesia’s capital that uses dedicated lanes and high-capacity buses to provide mass public transportation across the city.
-
D.
Palembang LRT
Palembang LRT is an elevated light rail transit system in Palembang, Indonesia, built to improve urban mobility and support major events such as the 2018 Asian Games.
-
E.
PNR Metro Commuter Line
The PNR Metro Commuter Line is a suburban rail service in Metro Manila operated by the Philippine National Railways, providing commuter train connections across key areas of the capital region.
- F. None of above. chosen
Provenance (5 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_69c008b0e7ac8190808a59573ee646f3 |
completed | March 22, 2026, 3:20 p.m. |
| NER | Named-entity recognition | batch_69c063021258819093a9237041816638 |
completed | March 22, 2026, 9:45 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c20dfbf42c8190842a471db4ff3de0 |
completed | March 24, 2026, 4:07 a.m. |
| NEDg | Description generation | batch_69c215efd48c81908365f0525cb6e3dc |
completed | March 24, 2026, 4:41 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69c21654dfac8190a5e985d539e2bcb4 |
completed | March 24, 2026, 4:43 a.m. |
Created at: March 22, 2026, 4:23 p.m.