Triple

T1565842
Position Surface form Disambiguated ID Type / Status
Subject Tabora Region E33430 entity
Predicate traversedBy P225 FINISHED
Object 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.
E177044 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: Tabora–Kigoma railway | Statement: [Tabora Region, traversedBy, Tabora–Kigoma railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Tabora–Kigoma railway
Context triple: [Tabora Region, traversedBy, Tabora–Kigoma railway]
  • A. 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.
  • B. 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.
  • C. Umbwe Route
    Umbwe Route is a steep, short, and less-traveled ascent path on Mount Kilimanjaro known for its direct approach and challenging terrain.
  • D. Harare–Beitbridge highway
    The Harare–Beitbridge highway is a major arterial road in Zimbabwe that links the capital Harare with the Beitbridge border post to South Africa, serving as a key regional trade and transport corridor.
  • E. Kigoma
    Kigoma is a port city in western Tanzania located on the eastern shore of Lake Tanganyika and serving as a key regional transport and trade hub.
  • 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: Tabora–Kigoma railway
Triple: [Tabora Region, traversedBy, Tabora–Kigoma railway]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Tabora–Kigoma railway
Target entity description: 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.
  • A. 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.
  • B. 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.
  • C. Umbwe Route
    Umbwe Route is a steep, short, and less-traveled ascent path on Mount Kilimanjaro known for its direct approach and challenging terrain.
  • D. Harare–Beitbridge highway
    The Harare–Beitbridge highway is a major arterial road in Zimbabwe that links the capital Harare with the Beitbridge border post to South Africa, serving as a key regional trade and transport corridor.
  • E. Kigoma
    Kigoma is a port city in western Tanzania located on the eastern shore of Lake Tanganyika and serving as a key regional transport and trade hub.
  • 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_69a885f11b048190935025a035302715 completed March 4, 2026, 7:20 p.m.
NER Named-entity recognition batch_69abb2308bec81909d1660934eff171b completed March 7, 2026, 5:05 a.m.
NED1 Entity disambiguation (via context triple) batch_69ad3719dfdc819085511f96f9f92dba completed March 8, 2026, 8:45 a.m.
NEDg Description generation batch_69ad37d59e94819085504ea25dfa8311 completed March 8, 2026, 8:48 a.m.
NED2 Entity disambiguation (via description) batch_69ad382b126c8190a308415bd6c4264b completed March 8, 2026, 8:49 a.m.
Created at: March 4, 2026, 7:27 p.m.