Triple
T22963894
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Commuter Rail at South Station |
E570980
|
entity |
| Predicate | terminusFor |
P388
|
FINISHED |
| Object |
South Coast Rail service
South Coast Rail service is a planned Massachusetts Bay Transportation Authority commuter rail extension that will connect Boston to the South Coast cities of New Bedford and Fall River.
|
E1563147
|
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: South Coast Rail service | Statement: [MBTA Commuter Rail at South Station, terminusFor, South Coast Rail service]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: South Coast Rail service Context triple: [MBTA Commuter Rail at South Station, terminusFor, South Coast Rail service]
-
A.
South Coast Line
The South Coast Line is a New South Wales passenger rail service that runs south from Sydney through the Illawarra region to coastal centres such as Wollongong and Kiama.
-
B.
Gloucester–Newport line
The Gloucester–Newport line is a major railway route in western England and South Wales that runs along the River Severn, linking Gloucester with Newport and forming part of an important cross-border passenger and freight corridor.
-
C.
Franklin Line commuter rail service
The Franklin Line commuter rail service is a Massachusetts Bay Transportation Authority (MBTA) commuter rail route connecting Boston with southwestern suburbs and towns in Norfolk County.
-
D.
MBTA Commuter Rail Providence/Stoughton Line
The MBTA Commuter Rail Providence/Stoughton Line is a regional rail service connecting Boston with Providence and Stoughton, providing key commuter and intercity transit through southeastern Massachusetts and northern Rhode Island.
-
E.
Southampton–Salisbury line
The Southampton–Salisbury line is a regional railway route in southern England that connects the coastal city of Southampton with the cathedral city of Salisbury, serving intermediate towns such as Romsey.
- 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: South Coast Rail service Triple: [MBTA Commuter Rail at South Station, terminusFor, South Coast Rail service]
Generated description
South Coast Rail service is a planned Massachusetts Bay Transportation Authority commuter rail extension that will connect Boston to the South Coast cities of New Bedford and Fall River.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: South Coast Rail service Target entity description: South Coast Rail service is a planned Massachusetts Bay Transportation Authority commuter rail extension that will connect Boston to the South Coast cities of New Bedford and Fall River.
-
A.
South Coast Line
The South Coast Line is a New South Wales passenger rail service that runs south from Sydney through the Illawarra region to coastal centres such as Wollongong and Kiama.
-
B.
Gloucester–Newport line
The Gloucester–Newport line is a major railway route in western England and South Wales that runs along the River Severn, linking Gloucester with Newport and forming part of an important cross-border passenger and freight corridor.
-
C.
Franklin Line commuter rail service
The Franklin Line commuter rail service is a Massachusetts Bay Transportation Authority (MBTA) commuter rail route connecting Boston with southwestern suburbs and towns in Norfolk County.
-
D.
MBTA Commuter Rail Providence/Stoughton Line
The MBTA Commuter Rail Providence/Stoughton Line is a regional rail service connecting Boston with Providence and Stoughton, providing key commuter and intercity transit through southeastern Massachusetts and northern Rhode Island.
-
E.
Southampton–Salisbury line
The Southampton–Salisbury line is a regional railway route in southern England that connects the coastal city of Southampton with the cathedral city of Salisbury, serving intermediate towns such as Romsey.
- F. None of above. chosen
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_69e245b212a88190b5259caf51606084 |
completed | April 17, 2026, 2:37 p.m. |
| NER | Named-entity recognition | batch_69f181f66fbc8190a4a7b73d17537132 |
completed | April 29, 2026, 3:58 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a0bca22caa88190889e965c78477a96 |
completed | May 19, 2026, 2:25 a.m. |
| NEDg | Description generation | batch_6a0bcb1904c88190ac32e5709bc95858 |
completed | May 19, 2026, 2:29 a.m. |
| NED2 | Entity disambiguation (via description) | batch_6a0bcbb8793881909621b16c9ad51cbb |
completed | May 19, 2026, 2:32 a.m. |
Created at: April 17, 2026, 3:47 p.m.