Triple

T19145485
Position Surface form Disambiguated ID Type / Status
Subject Transcameroon Railway E468667 entity
Predicate connectsTo P845 FINISHED
Object Douala–Yaoundé railway
The Douala–Yaoundé railway is a major rail line in Cameroon linking the economic capital Douala with the political capital Yaoundé, serving as a key corridor for passenger and freight transport.
E468667 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: Douala–Yaoundé railway | Statement: [Transcameroon Railway, connectsTo, Douala–Yaoundé railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Douala–Yaoundé railway
Context triple: [Transcameroon Railway, connectsTo, Douala–Yaoundé railway]
  • A. 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.
  • B. Trans-Gabon Railway
    The Trans-Gabon Railway is a major rail line in Gabon that connects the inland mining regions to the Atlantic coast, serving as a key route for transporting minerals and goods across the country.
  • C. Abidjan–Ouagadougou railway
    The Abidjan–Ouagadougou railway is a major West African rail line linking the port city of Abidjan in Côte d'Ivoire with Ouagadougou, the capital of Burkina Faso, facilitating regional trade and passenger transport.
  • D. Bamako–Dakar Railway
    The Bamako–Dakar Railway is a major West African rail line connecting Mali’s capital Bamako with Dakar in Senegal, facilitating regional trade and passenger transport.
  • E. 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.
  • 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: Douala–Yaoundé railway
Triple: [Transcameroon Railway, connectsTo, Douala–Yaoundé railway]
Generated description
The Douala–Yaoundé railway is a major rail line in Cameroon linking the economic capital Douala with the political capital Yaoundé, serving as a key corridor for passenger and freight transport.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Douala–Yaoundé railway
Target entity description: The Douala–Yaoundé railway is a major rail line in Cameroon linking the economic capital Douala with the political capital Yaoundé, serving as a key corridor for passenger and freight transport.
  • A. Transcameroon Railway chosen
    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.
  • B. Trans-Gabon Railway
    The Trans-Gabon Railway is a major rail line in Gabon that connects the inland mining regions to the Atlantic coast, serving as a key route for transporting minerals and goods across the country.
  • C. Abidjan–Ouagadougou railway
    The Abidjan–Ouagadougou railway is a major West African rail line linking the port city of Abidjan in Côte d'Ivoire with Ouagadougou, the capital of Burkina Faso, facilitating regional trade and passenger transport.
  • D. Bamako–Dakar Railway
    The Bamako–Dakar Railway is a major West African rail line connecting Mali’s capital Bamako with Dakar in Senegal, facilitating regional trade and passenger transport.
  • E. 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.
  • 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_69d8dd084ff48190ac0f8c46ee722629 completed April 10, 2026, 11:20 a.m.
NER Named-entity recognition batch_69e5e978b0b481909a531efa030c5def completed April 20, 2026, 8:53 a.m.
NED1 Entity disambiguation (via context triple) batch_6a07143c68708190b62a9c93ec6c6ce0 completed May 15, 2026, 12:40 p.m.
NEDg Description generation batch_6a0714c3099c81909b009fe952d0de81 completed May 15, 2026, 12:42 p.m.
NED2 Entity disambiguation (via description) batch_6a07152aafb48190a767005628c6380a completed May 15, 2026, 12:44 p.m.
Created at: April 10, 2026, 12:06 p.m.