Triple

T14664776

Position	Surface form	Disambiguated ID	Type / Status
Subject	Bamako–Dakar Railway	`E344338`	entity
Predicate	historicalOperator	`P2834`	FINISHED
Object	Société Nationale des Chemins de Fer du Sénégal Société Nationale des Chemins de Fer du Sénégal is the former state-owned railway company of Senegal responsible for operating and managing the country’s main rail services and infrastructure.	`E1113000`	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: Société Nationale des Chemins de Fer du Sénégal | Statement: [Bamako–Dakar Railway, historicalOperator, Société Nationale des Chemins de Fer du Sénégal]

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Société Nationale des Chemins de Fer du Sénégal
Context triple: [Bamako–Dakar Railway, historicalOperator, Société Nationale des Chemins de Fer du Sénégal]

A. Régie des Chemins de Fer du Mali
Régie des Chemins de Fer du Mali was the state-owned railway company of Mali responsible for operating and managing the country’s rail services.
B. Compagnie des chemins de fer du Midi
Compagnie des chemins de fer du Midi was a major 19th- and early 20th-century French railway company that operated extensive lines in the southwest of France before being absorbed into the national rail system.
C. Société Nationale des Chemins de fer du Congo
Société Nationale des Chemins de fer du Congo is the state-owned railway company of the Democratic Republic of the Congo, responsible for operating much of the country’s rail transport infrastructure and services.
D. OUIGO
OUIGO is a low-cost high-speed train service operated by France’s national railway company SNCF, offering budget-friendly travel on major routes.
E. Société Djiboutienne de Chemin de Fer
Société Djiboutienne de Chemin de Fer is the national railway company of Djibouti responsible for managing and operating the country’s rail services, including its international link with Ethiopia.
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: Société Nationale des Chemins de Fer du Sénégal
Triple: [Bamako–Dakar Railway, historicalOperator, Société Nationale des Chemins de Fer du Sénégal]

Generated description

Société Nationale des Chemins de Fer du Sénégal is the former state-owned railway company of Senegal responsible for operating and managing the country’s main rail services and infrastructure.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Société Nationale des Chemins de Fer du Sénégal
Target entity description: Société Nationale des Chemins de Fer du Sénégal is the former state-owned railway company of Senegal responsible for operating and managing the country’s main rail services and infrastructure.

A. Régie des Chemins de Fer du Mali
Régie des Chemins de Fer du Mali was the state-owned railway company of Mali responsible for operating and managing the country’s rail services.
B. Compagnie des chemins de fer du Midi
Compagnie des chemins de fer du Midi was a major 19th- and early 20th-century French railway company that operated extensive lines in the southwest of France before being absorbed into the national rail system.
C. Société Nationale des Chemins de fer du Congo
Société Nationale des Chemins de fer du Congo is the state-owned railway company of the Democratic Republic of the Congo, responsible for operating much of the country’s rail transport infrastructure and services.
D. OUIGO
OUIGO is a low-cost high-speed train service operated by France’s national railway company SNCF, offering budget-friendly travel on major routes.
E. Société Djiboutienne de Chemin de Fer
Société Djiboutienne de Chemin de Fer is the national railway company of Djibouti responsible for managing and operating the country’s rail services, including its international link with Ethiopia.
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_69d822e283fc8190a0e4c235cf880052`	completed	April 9, 2026, 10:06 p.m.
NER	Named-entity recognition	`batch_69deb54c69f8819080a37161deecfba8`	completed	April 14, 2026, 9:44 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69fde177ced48190a448cbee1f4c75bf`	completed	May 8, 2026, 1:13 p.m.
NEDg	Description generation	`batch_69fde249f1288190ac2e53c26ae7968b`	completed	May 8, 2026, 1:16 p.m.
NED2	Entity disambiguation (via description)	`batch_69fde2ec348c8190bf5d6f5993d3246c`	completed	May 8, 2026, 1:19 p.m.

Created at: April 10, 2026, 1:27 a.m.