Triple
T8802140
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Hertford Loop Line |
E209434
|
entity |
| Predicate | rollingStockUsed |
P5426
|
FINISHED |
| Object | Class 313 EMU (historical) |
E567946
|
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: Class 313 EMU (historical) | Statement: [Hertford Loop Line, rollingStockUsed, Class 313 EMU (historical)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Class 313 EMU (historical) Context triple: [Hertford Loop Line, rollingStockUsed, Class 313 EMU (historical)]
-
A.
Class 313 EMU
chosen
The Class 313 EMU is a British dual-voltage electric multiple unit train introduced in the 1970s, notable for being among the first of its kind to operate on both overhead and third-rail power systems.
-
B.
Class 317 EMU
The Class 317 EMU is a type of British electric multiple unit train introduced in the early 1980s for suburban and commuter services on 25 kV AC overhead electrified routes.
-
C.
Class 455 EMU
The Class 455 EMU is a type of British electric multiple unit train introduced in the early 1980s for suburban commuter services in the South East of England.
-
D.
Class 745 EMU
The Class 745 EMU is a modern electric multiple unit train used on regional and intercity services in the UK, built for high-capacity, high-comfort passenger operations.
-
E.
CP Class 3400 EMU
The CP Class 3400 EMU is a series of electric multiple-unit trains operated by Comboios de Portugal, primarily used for suburban and commuter rail 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_69ca836320e48190b5cf585b90a322c4 |
completed | March 30, 2026, 2:06 p.m. |
| NER | Named-entity recognition | batch_69cc5fb9c5c88190881b069e1face10c |
completed | March 31, 2026, 11:58 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69cf891583d48190ba276b5a1f7d6f7a |
completed | April 3, 2026, 9:32 a.m. |
Created at: March 30, 2026, 6:44 p.m.