Triple
T22239033
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | London Liverpool Street–Norwich |
E549670
|
entity |
| Predicate | primaryRollingStock |
P1305
|
FINISHED |
| Object | Class 745 electric multiple unit |
—
|
NE NERFINISHED |
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 745 electric multiple unit | Statement: [London Liverpool Street–Norwich, primaryRollingStock, Class 745 electric multiple unit]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Class 745 electric multiple unit Context triple: [London Liverpool Street–Norwich, primaryRollingStock, Class 745 electric multiple unit]
-
A.
Class 78 electric multiple unit
The Class 78 electric multiple unit is a high-speed airport express train used by the Norwegian operator Flytoget to provide fast rail connections between Oslo and Oslo Airport.
-
B.
Class 71 electric multiple unit
The Class 71 electric multiple unit is a high-speed Norwegian train type used primarily for Flytoget’s airport express services between Oslo and Oslo Airport Gardermoen.
-
C.
Class 777 electric multiple units
The Class 777 electric multiple units are a modern fleet of low-floor, high-capacity commuter trains built for Merseyrail’s urban rail network around Liverpool, featuring improved accessibility, energy efficiency, and passenger amenities.
-
D.
Class 700 electric multiple unit
The Class 700 electric multiple unit is a modern high-capacity commuter train used on Thameslink and related services in the UK, designed for intensive suburban and cross-London operations.
-
E.
Class 745 EMU
chosen
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.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (2 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_69e11e4102b881909cf47d3768e25c19 |
completed | April 16, 2026, 5:37 p.m. |
| NER | Named-entity recognition | batch_69f132123a048190ba5a90d7acb9aeb2 |
completed | April 28, 2026, 10:17 p.m. |
Created at: April 16, 2026, 8:38 p.m.