Triple

T7574786
Position Surface form Disambiguated ID Type / Status
Subject Kalemie E179333 entity
Predicate railwayLine P848 FINISHED
Object Congo–Ocean railway network (eastern branch terminus)
The Congo–Ocean railway network (eastern branch terminus) is the endpoint of the eastern extension of the Congo–Ocean Railway, serving as a key rail terminus linking inland regions to the main line toward the Atlantic coast in the Republic of the Congo.
E673265 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: Congo–Ocean railway network (eastern branch terminus) | Statement: [Kalemie, railwayLine, Congo–Ocean railway network (eastern branch terminus)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Congo–Ocean railway network (eastern branch terminus)
Context triple: [Kalemie, railwayLine, Congo–Ocean railway network (eastern branch terminus)]
  • A. 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.
  • B. Transcameroon Railway
    The Transcameroon Railway is a major rail line in Cameroon that links the country's central and northern regions, supporting both passenger travel and freight transport across key economic areas.
  • C. 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.
  • D. Livingstone–Lusaka–Kabwe–Ndola line
    The Livingstone–Lusaka–Kabwe–Ndola line is a principal north–south railway route in Zambia that links major urban and industrial centers from the southern border at Livingstone through the capital Lusaka to the Copperbelt region.
  • E. 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.
  • 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: Congo–Ocean railway network (eastern branch terminus)
Triple: [Kalemie, railwayLine, Congo–Ocean railway network (eastern branch terminus)]
Generated description
The Congo–Ocean railway network (eastern branch terminus) is the endpoint of the eastern extension of the Congo–Ocean Railway, serving as a key rail terminus linking inland regions to the main line toward the Atlantic coast in the Republic of the Congo.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Congo–Ocean railway network (eastern branch terminus)
Target entity description: The Congo–Ocean railway network (eastern branch terminus) is the endpoint of the eastern extension of the Congo–Ocean Railway, serving as a key rail terminus linking inland regions to the main line toward the Atlantic coast in the Republic of the Congo.
  • A. 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.
  • B. Transcameroon Railway
    The Transcameroon Railway is a major rail line in Cameroon that links the country's central and northern regions, supporting both passenger travel and freight transport across key economic areas.
  • C. 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.
  • D. Livingstone–Lusaka–Kabwe–Ndola line
    The Livingstone–Lusaka–Kabwe–Ndola line is a principal north–south railway route in Zambia that links major urban and industrial centers from the southern border at Livingstone through the capital Lusaka to the Copperbelt region.
  • E. 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.
  • 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_69c69f316e50819081a271c85c06f918 completed March 27, 2026, 3:16 p.m.
NER Named-entity recognition batch_69c6f94a25148190b5b76e000e0336c4 completed March 27, 2026, 9:40 p.m.
NED1 Entity disambiguation (via context triple) batch_69c856edb2088190939cee9c5a419c11 completed March 28, 2026, 10:32 p.m.
NEDg Description generation batch_69c857bcb7088190baf390d63e0941d4 completed March 28, 2026, 10:35 p.m.
NED2 Entity disambiguation (via description) batch_69c8582cd3d08190811b7e5b1f98a28c completed March 28, 2026, 10:37 p.m.
Created at: March 27, 2026, 3:51 p.m.