Triple
T21054015
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Taita Taveta |
E518661
|
entity |
| Predicate | traversedBy |
P225
|
FINISHED |
| Object | Mombasa–Nairobi Standard Gauge Railway |
—
|
NE NERFINISHED |
How this triple was built (2 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: Mombasa–Nairobi Standard Gauge Railway | Statement: [Taita Taveta, traversedBy, Mombasa–Nairobi Standard Gauge Railway]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Mombasa–Nairobi Standard Gauge Railway Context triple: [Taita Taveta, traversedBy, Mombasa–Nairobi Standard Gauge Railway]
-
A.
Mombasa–Nairobi railway
chosen
The Mombasa–Nairobi railway is a major rail line in Kenya linking the coastal city of Mombasa with the capital Nairobi, historically significant for its role in colonial-era transport and regional development.
-
B.
Nairobi Terminus of the Mombasa–Nairobi Standard Gauge Railway
The Nairobi Terminus of the Mombasa–Nairobi Standard Gauge Railway is a major modern passenger and freight rail station serving as the primary SGR hub for Kenya’s capital.
-
C.
Nairobi commuter rail network
The Nairobi commuter rail network is a suburban passenger rail system serving Nairobi and its surrounding metropolitan areas, aimed at easing urban congestion and improving daily transit for commuters.
-
D.
Tabora–Kigoma railway
The Tabora–Kigoma railway is a key western Tanzanian rail line connecting the inland rail hub of Tabora to the port town of Kigoma on Lake Tanganyika, facilitating regional trade and passenger transport.
-
E.
Nairobi–Malindi route
The Nairobi–Malindi route is a domestic Kenyan air corridor linking the capital city Nairobi with the coastal town of Malindi, serving both business and tourism travel.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
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_69e0b5053ac48190921529544959e906 |
completed | April 16, 2026, 10:08 a.m. |
| NER | Named-entity recognition | batch_69e6fd7e087c81908712ddc63e8b1e6c |
completed | April 21, 2026, 4:30 a.m. |
Created at: April 16, 2026, 2:36 p.m.