Triple
T11077849
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Portland Transportation Center |
E261912
|
entity |
| Predicate | servedByRailLine |
P1293
|
FINISHED |
| Object | Pan Am Railways freight main line (used by Downeaster) |
E675555
|
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: Pan Am Railways freight main line (used by Downeaster) | Statement: [Portland Transportation Center, servedByRailLine, Pan Am Railways freight main line (used by Downeaster)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Pan Am Railways freight main line (used by Downeaster) Context triple: [Portland Transportation Center, servedByRailLine, Pan Am Railways freight main line (used by Downeaster)]
-
A.
Norfolk Southern Railway main line
The Norfolk Southern Railway main line is a major freight and passenger rail corridor in the eastern United States operated by Norfolk Southern Railway.
-
B.
Burlington Northern Santa Fe Railway main line
The Burlington Northern Santa Fe Railway main line is a major transcontinental freight rail corridor in the United States that carries heavy rail traffic across key western routes, including the desert region near Needles, California.
-
C.
Boston and Maine Railroad main line
chosen
The Boston and Maine Railroad main line was a major New England rail corridor that formed the core route of the Boston and Maine Railroad, connecting Boston with key cities and towns across northern Massachusetts and beyond.
-
D.
PNR North Main Line
PNR North Main Line is a major Philippine National Railways route in Luzon that historically connected Manila to northern provinces, serving both commuter and long-distance rail services.
-
E.
former Central Railroad of New Jersey main line
The former Central Railroad of New Jersey main line was a major historic rail route that once connected New York Harbor with central and western New Jersey, serving as a key passenger and freight corridor before most of its services were discontinued or absorbed into modern transit systems.
- 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_69d6aa9983c08190b0ef61603b69feac |
completed | April 8, 2026, 7:20 p.m. |
| NER | Named-entity recognition | batch_69d7999407288190a901d4a2427a2102 |
completed | April 9, 2026, 12:20 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69e3c8d4f22881909fa3d094a19b0a14 |
completed | April 18, 2026, 6:09 p.m. |
Created at: April 8, 2026, 9:27 p.m.