Triple
T390611
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Nilo-Saharan languages |
E8870
|
entity |
| Predicate | geographicRange |
P2178
|
FINISHED |
| Object |
Lake Chad basin
The Lake Chad basin is a large, landlocked drainage region in north-central Africa encompassing parts of Chad, Nigeria, Niger, Cameroon, and surrounding countries, centered around Lake Chad and its river systems.
|
E50221
|
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: Lake Chad basin | Statement: [Nilo-Saharan languages, geographicRange, Lake Chad basin]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Lake Chad basin Context triple: [Nilo-Saharan languages, geographicRange, Lake Chad basin]
-
A.
Sahel
The Sahel is a semi-arid transition zone in Africa between the Sahara Desert to the north and the more humid savannas to the south, spanning several countries from the Atlantic Ocean to the Red Sea.
-
B.
Borkou-Ennedi-Tibesti
Borkou-Ennedi-Tibesti was a former administrative region in northern Chad, known for its vast Sahara desert landscapes, including the Ennedi Plateau and Tibesti Mountains, and its predominantly Toubou (Tebu) population.
-
C.
Niger
Niger is a landlocked West African country in the Sahel region, known for its vast desert landscapes, uranium resources, and predominantly rural population.
-
D.
Lake Tana
Lake Tana is Ethiopia’s largest lake and the primary source of the Blue Nile, renowned for its island monasteries and ecological importance in the Ethiopian Highlands.
-
E.
Central Sahara
The Central Sahara is a vast, arid desert region in north-central Africa characterized by extreme climatic conditions, sparse population, and a long history of trans-Saharan trade and nomadic cultures.
- 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: Lake Chad basin Triple: [Nilo-Saharan languages, geographicRange, Lake Chad basin]
Generated description
The Lake Chad basin is a large, landlocked drainage region in north-central Africa encompassing parts of Chad, Nigeria, Niger, Cameroon, and surrounding countries, centered around Lake Chad and its river systems.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Lake Chad basin Target entity description: The Lake Chad basin is a large, landlocked drainage region in north-central Africa encompassing parts of Chad, Nigeria, Niger, Cameroon, and surrounding countries, centered around Lake Chad and its river systems.
-
A.
Sahel
The Sahel is a semi-arid transition zone in Africa between the Sahara Desert to the north and the more humid savannas to the south, spanning several countries from the Atlantic Ocean to the Red Sea.
-
B.
Borkou-Ennedi-Tibesti
Borkou-Ennedi-Tibesti was a former administrative region in northern Chad, known for its vast Sahara desert landscapes, including the Ennedi Plateau and Tibesti Mountains, and its predominantly Toubou (Tebu) population.
-
C.
Niger
Niger is a landlocked West African country in the Sahel region, known for its vast desert landscapes, uranium resources, and predominantly rural population.
-
D.
Lake Tana
Lake Tana is Ethiopia’s largest lake and the primary source of the Blue Nile, renowned for its island monasteries and ecological importance in the Ethiopian Highlands.
-
E.
Central Sahara
The Central Sahara is a vast, arid desert region in north-central Africa characterized by extreme climatic conditions, sparse population, and a long history of trans-Saharan trade and nomadic cultures.
- 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_69a2e7f55c60819097aff65ea2ca2832 |
completed | Feb. 28, 2026, 1:04 p.m. |
| NER | Named-entity recognition | batch_69a2ee2c2d1881909aa1ccfaa4172b38 |
completed | Feb. 28, 2026, 1:31 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a40ad425a881909eea63c64a683c0f |
completed | March 1, 2026, 9:45 a.m. |
| NEDg | Description generation | batch_69a40b2db7708190a7b0dfb448310ae6 |
completed | March 1, 2026, 9:47 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a40ba273888190b3923d6f5efefd2a |
completed | March 1, 2026, 9:49 a.m. |
Created at: Feb. 28, 2026, 1:08 p.m.