Triple
T19612221
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Chicago–Detroit/Pontiac corridor |
E470759
|
entity |
| Predicate | hasEndpointStation |
P34947
|
FINISHED |
| Object | Detroit station (Amtrak) |
—
|
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: Detroit station (Amtrak) | Statement: [Chicago–Detroit/Pontiac corridor, hasEndpointStation, Detroit station (Amtrak)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Detroit station (Amtrak) Context triple: [Chicago–Detroit/Pontiac corridor, hasEndpointStation, Detroit station (Amtrak)]
-
A.
Detroit station (Amtrak)
chosen
Detroit station (Amtrak) is a key intercity passenger rail station in Detroit, Michigan, serving as a major stop on Amtrak routes connecting the city with Chicago and other destinations in the Midwest.
-
B.
Amtrak station Dearborn
Amtrak station Dearborn is a passenger rail station in Dearborn, Michigan, serving Amtrak trains and connecting the city to regional and national rail routes.
-
C.
Ann Arbor station
Ann Arbor station is a key Amtrak passenger rail stop in Ann Arbor, Michigan, serving intercity trains along the busy Chicago–Detroit/Pontiac corridor.
-
D.
Grand Rapids station
Grand Rapids station is a passenger rail station in Grand Rapids, Michigan, serving as the western terminus of Amtrak’s Pere Marquette line.
-
E.
Colfax Amtrak station
Colfax Amtrak station is a passenger rail station in the historic Gold Rush town of Colfax, California, serving Amtrak’s California Zephyr route.
- 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_69d8e510fa248190b7afb274a1d4cf73 |
completed | April 10, 2026, 11:54 a.m. |
| NER | Named-entity recognition | batch_69e640cbeda08190addb1adf84af4993 |
completed | April 20, 2026, 3:05 p.m. |
Created at: April 10, 2026, 1:43 p.m.