Triple

T8540800
Position Surface form Disambiguated ID Type / Status
Subject Nairobi County E202188 entity
Predicate hasRailway P848 FINISHED
Object 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.
 E741118 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: Nairobi Terminus of the Mombasa–Nairobi Standard Gauge Railway | Statement: [Nairobi County, hasRailway, Nairobi Terminus of the Mombasa–Nairobi Standard Gauge Railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Nairobi Terminus of the Mombasa–Nairobi Standard Gauge Railway
Context triple: [Nairobi County, hasRailway, Nairobi Terminus of the Mombasa–Nairobi Standard Gauge Railway]
  • A. Nairobi station
    Nairobi station is one of the themed passenger stops on Busch Gardens Tampa Bay’s Serengeti Express railway, serving as a gateway to the park’s African-inspired areas.
  • B. Mombasa–Nairobi railway
    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.
  • C. Kasarani, Nairobi
    Kasarani, Nairobi is a residential and commercial district in northeastern Nairobi known for its sports facilities, educational institutions, and growing urban development.
  • 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. Savanna railway
    The Savanna railway is a historic Colombian rail line that serves the Bogotá savanna region, including the town of Zipaquirá, and is now best known for its tourist and heritage train services.
  • 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: Nairobi Terminus of the Mombasa–Nairobi Standard Gauge Railway
Triple: [Nairobi County, hasRailway, Nairobi Terminus of the Mombasa–Nairobi Standard Gauge Railway]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Nairobi Terminus of the Mombasa–Nairobi Standard Gauge Railway
Target entity description: 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.
  • A. Nairobi station
    Nairobi station is one of the themed passenger stops on Busch Gardens Tampa Bay’s Serengeti Express railway, serving as a gateway to the park’s African-inspired areas.
  • B. Mombasa–Nairobi railway
    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.
  • C. Kasarani, Nairobi
    Kasarani, Nairobi is a residential and commercial district in northeastern Nairobi known for its sports facilities, educational institutions, and growing urban development.
  • 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. Savanna railway
    The Savanna railway is a historic Colombian rail line that serves the Bogotá savanna region, including the town of Zipaquirá, and is now best known for its tourist and heritage train services.
  • 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_69ca832461e88190a654c5e44e233aa8 completed March 30, 2026, 2:05 p.m.
NER Named-entity recognition batch_69cbe6e10bc081909a7210c577b807fb completed March 31, 2026, 3:23 p.m.
NED1 Entity disambiguation (via context triple) batch_69ce6da3d65c819087ed6b46dfc35885 completed April 2, 2026, 1:22 p.m.
NEDg Description generation batch_69ce6ec3b080819082d64646d453541d completed April 2, 2026, 1:27 p.m.
NED2 Entity disambiguation (via description) batch_69ce6fe928d48190824e7a94fea5cfc0 completed April 2, 2026, 1:32 p.m.
Created at: March 30, 2026, 6:18 p.m.