Triple
T7603485
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Tabora–Mpanda railway |
E180041
|
entity |
| Predicate | operator |
P179
|
FINISHED |
| Object | Tanzania Railways Corporation |
E234423
|
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: Tanzania Railways Corporation | Statement: [Tabora–Mpanda railway, operator, Tanzania Railways Corporation]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Tanzania Railways Corporation Context triple: [Tabora–Mpanda railway, operator, Tanzania Railways Corporation]
-
A.
Tanzania Railways Corporation
chosen
Tanzania Railways Corporation is the state-owned company responsible for operating and managing much of Tanzania’s railway network for passenger and freight transport.
-
B.
Tanzanian railway network
The Tanzanian railway network is the national system of rail lines that connects major cities, ports, and inland regions across Tanzania for passenger and freight transport.
-
C.
Tanzania Airports Authority
Tanzania Airports Authority is the government agency responsible for managing and operating civil airports and aerodromes throughout Tanzania.
-
D.
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.
-
E.
National Railways of Zimbabwe
National Railways of Zimbabwe is the state-owned railway company responsible for operating the majority of Zimbabwe’s rail transport infrastructure and services.
- 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_69c69f3567008190ab01d2ca7b53584a |
completed | March 27, 2026, 3:16 p.m. |
| NER | Named-entity recognition | batch_69c6f9fa633081909660f653f5b073cd |
completed | March 27, 2026, 9:43 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c870858c648190acbbad9b5bb12ba4 |
completed | March 29, 2026, 12:21 a.m. |
Created at: March 27, 2026, 3:54 p.m.