Triple
T2403490
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Lake Chad Basin |
E50221
|
entity |
| Predicate | hydrologicalSystem |
P1009
|
FINISHED |
| Object | Lake Chad drainage system |
E50221
|
NE FINISHED |
How this triple was built (2 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 drainage system | Statement: [Lake Chad Basin, hydrologicalSystem, Lake Chad drainage system]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Lake Chad drainage system Context triple: [Lake Chad Basin, hydrologicalSystem, Lake Chad drainage system]
-
A.
Lake Chad basin
chosen
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.
-
B.
Inner Niger Delta
The Inner Niger Delta is a vast inland floodplain in Mali characterized by seasonal wetlands, rich biodiversity, and traditional fishing and farming communities.
-
C.
Lake Chad
Lake Chad is a large, shallow, and historically significant freshwater lake in north-central Africa that has dramatically shrunk in size over recent decades due to climate change and human use.
-
D.
Sudd
Sudd is one of the world’s largest wetlands, a vast swampy region of the Nile in South Sudan known for its dense vegetation and seasonal flooding.
-
E.
Lak Nuer
Lak Nuer is a dialect of the Nuer language spoken by a subgroup of the Nuer people in South Sudan and neighboring regions.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69a88b0339a88190a1207333cd271cc9 |
completed | March 4, 2026, 7:41 p.m. |
| NER | Named-entity recognition | batch_69abc8f8aa2881909192920ee394f0b3 |
completed | March 7, 2026, 6:43 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69aef09b92048190acfa3a85417f259c |
completed | March 9, 2026, 4:08 p.m. |
Created at: March 4, 2026, 7:58 p.m.