Triple
T5481960
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Northeast Corridor electrified services |
E123485
|
entity |
| Predicate | infrastructureOwner |
P347
|
FINISHED |
| Object |
Metro-North Railroad (New Rochelle–New Haven segment)
The Metro-North Railroad New Rochelle–New Haven segment is a key suburban commuter rail corridor in the New York–Connecticut region, carrying frequent passenger services along part of the Northeast Corridor.
|
E139806
|
NE FINISHED |
How this triple was built (4 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: Metro-North Railroad (New Rochelle–New Haven segment) | Statement: [Northeast Corridor electrified services, infrastructureOwner, Metro-North Railroad (New Rochelle–New Haven segment)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Metro-North Railroad (New Rochelle–New Haven segment) Context triple: [Northeast Corridor electrified services, infrastructureOwner, Metro-North Railroad (New Rochelle–New Haven segment)]
-
A.
Metro-North Railroad New Canaan Branch
The Metro-North Railroad New Canaan Branch is a commuter rail line in southwestern Connecticut that provides service between New Canaan and the New Haven Line main route into the New York City metropolitan area.
-
B.
Metro-North Railroad Waterbury Branch
The Metro-North Railroad Waterbury Branch is a commuter rail line in Connecticut that provides service between Waterbury and the New Haven Line, connecting the Naugatuck Valley to the broader Metro-North network.
-
C.
Metro-North Railroad Hudson Line
The Metro-North Railroad Hudson Line is a major commuter rail route running along the east bank of the Hudson River, connecting New York City with communities throughout the Hudson Valley.
-
D.
New Haven Line
The New Haven Line is a major commuter rail route in the northeastern United States that connects New York City with New Haven, Connecticut, serving numerous communities along the Long Island Sound corridor.
-
E.
Metro-North Railroad
Metro-North Railroad is a major commuter rail service operating in the New York metropolitan area, primarily connecting New York City with its northern suburbs in New York State and Connecticut.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Metro-North Railroad (New Rochelle–New Haven segment) Triple: [Northeast Corridor electrified services, infrastructureOwner, Metro-North Railroad (New Rochelle–New Haven segment)]
Generated description
The Metro-North Railroad New Rochelle–New Haven segment is a key suburban commuter rail corridor in the New York–Connecticut region, carrying frequent passenger services along part of the Northeast Corridor.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Metro-North Railroad (New Rochelle–New Haven segment) Target entity description: The Metro-North Railroad New Rochelle–New Haven segment is a key suburban commuter rail corridor in the New York–Connecticut region, carrying frequent passenger services along part of the Northeast Corridor.
-
A.
Metro-North Railroad New Canaan Branch
The Metro-North Railroad New Canaan Branch is a commuter rail line in southwestern Connecticut that provides service between New Canaan and the New Haven Line main route into the New York City metropolitan area.
-
B.
Metro-North Railroad Waterbury Branch
The Metro-North Railroad Waterbury Branch is a commuter rail line in Connecticut that provides service between Waterbury and the New Haven Line, connecting the Naugatuck Valley to the broader Metro-North network.
-
C.
Metro-North Railroad Hudson Line
The Metro-North Railroad Hudson Line is a major commuter rail route running along the east bank of the Hudson River, connecting New York City with communities throughout the Hudson Valley.
-
D.
New Haven Line
chosen
The New Haven Line is a major commuter rail route in the northeastern United States that connects New York City with New Haven, Connecticut, serving numerous communities along the Long Island Sound corridor.
-
E.
Metro-North Railroad
Metro-North Railroad is a major commuter rail service operating in the New York metropolitan area, primarily connecting New York City with its northern suburbs in New York State and Connecticut.
- F. None of above.
Provenance (5 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_69bd4648883481909e9775d43300c5fa |
completed | March 20, 2026, 1:06 p.m. |
| NER | Named-entity recognition | batch_69bd924bac088190b7d08df91534b0bc |
completed | March 20, 2026, 6:30 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69bf70dcb0c881909d9aaf0050a5c27b |
completed | March 22, 2026, 4:32 a.m. |
| NEDg | Description generation | batch_69bf726ca8b08190b4ae9d6d2787b303 |
completed | March 22, 2026, 4:39 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69bf72b99d988190801d6044fa07310c |
completed | March 22, 2026, 4:40 a.m. |
Created at: March 20, 2026, 2:09 p.m.