Triple

T13445691
Position Surface form Disambiguated ID Type / Status
Subject Mombasa–Nairobi railway E320475 entity
Predicate partOf P40 FINISHED
Object Uganda Railway
The Uganda Railway was a British colonial-era railway line built in the late 19th and early 20th centuries to connect the port of Mombasa on the Indian Ocean to the interior of East Africa, fundamentally shaping the region’s transport and economic development.
E320475 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: Uganda Railway | Statement: [Mombasa–Nairobi railway, partOf, Uganda Railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Uganda Railway
Context triple: [Mombasa–Nairobi railway, partOf, Uganda Railway]
  • A. 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.
  • B. Tanzania–Zambia Railway (TAZARA)
    The Tanzania–Zambia Railway (TAZARA) is a major bi-national rail line built with Chinese assistance that links landlocked Zambia to the Tanzanian port of Dar es Salaam, serving as a key transport and trade corridor in East and Southern Africa.
  • C. Tabora–Mpanda railway
    The Tabora–Mpanda railway is a regional rail line in western Tanzania that connects the town of Tabora with Mpanda, supporting transport and economic activity across the area.
  • D. 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.
  • E. Bulawayo–Victoria Falls railway
    The Bulawayo–Victoria Falls railway is a key rail line in western Zimbabwe that connects the city of Bulawayo to the Victoria Falls area, serving as an important regional transport and tourism corridor.
  • 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: Uganda Railway
Triple: [Mombasa–Nairobi railway, partOf, Uganda Railway]
Generated description
The Uganda Railway was a British colonial-era railway line built in the late 19th and early 20th centuries to connect the port of Mombasa on the Indian Ocean to the interior of East Africa, fundamentally shaping the region’s transport and economic development.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Uganda Railway
Target entity description: The Uganda Railway was a British colonial-era railway line built in the late 19th and early 20th centuries to connect the port of Mombasa on the Indian Ocean to the interior of East Africa, fundamentally shaping the region’s transport and economic development.
  • A. 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.
  • B. Tanzania–Zambia Railway (TAZARA)
    The Tanzania–Zambia Railway (TAZARA) is a major bi-national rail line built with Chinese assistance that links landlocked Zambia to the Tanzanian port of Dar es Salaam, serving as a key transport and trade corridor in East and Southern Africa.
  • C. Tabora–Mpanda railway
    The Tabora–Mpanda railway is a regional rail line in western Tanzania that connects the town of Tabora with Mpanda, supporting transport and economic activity across the area.
  • D. 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.
  • E. Bulawayo–Victoria Falls railway
    The Bulawayo–Victoria Falls railway is a key rail line in western Zimbabwe that connects the city of Bulawayo to the Victoria Falls area, serving as an important regional transport and tourism corridor.
  • F. None of above.

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_69d80761e6cc8190a90c844589998ecc completed April 9, 2026, 8:09 p.m.
NER Named-entity recognition batch_69dbaef5f610819092cad33ef72075ff completed April 12, 2026, 2:40 p.m.
NED1 Entity disambiguation (via context triple) batch_69f739965ef081909e85881ce805bbb5 completed May 3, 2026, 12:03 p.m.
NEDg Description generation batch_69f740e536d48190af369b38aa42438d completed May 3, 2026, 12:34 p.m.
NED2 Entity disambiguation (via description) batch_69f741b72d08819087808bf9bcffa0a1 completed May 3, 2026, 12:38 p.m.
Created at: April 9, 2026, 9:40 p.m.