Triple
T1424820
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Commuter Rail network |
E30305
|
entity |
| Predicate | hasLine |
P35
|
FINISHED |
| Object |
Greenbush Line
The Greenbush Line is a Massachusetts Bay Transportation Authority commuter rail route serving Boston’s South Station and several South Shore communities.
|
E175422
|
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: Greenbush Line | Statement: [MBTA Commuter Rail network, hasLine, Greenbush Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Greenbush Line Context triple: [MBTA Commuter Rail network, hasLine, Greenbush Line]
-
A.
Mernda line
The Mernda line is a suburban railway line in Melbourne, Australia, running from the central business district to the northeastern suburb of Mernda as part of the city’s metropolitan train network.
-
B.
Pakenham line
The Pakenham line is a suburban railway line in Melbourne, Australia, running from the central business district to the southeastern suburb of Pakenham as part of the city’s metropolitan train network.
-
C.
Lilydale line
The Lilydale line is a suburban railway line in Melbourne, Australia, running from the central business district to the outer eastern suburb of Lilydale as part of the city’s metropolitan train network.
-
D.
Werribee line
The Werribee line is a suburban railway line in Melbourne, Australia, that runs from the central business district to the southwestern suburb of Werribee as part of the city’s metropolitan train network.
-
E.
Illawarra railway line
The Illawarra railway line is a major suburban and intercity rail corridor in New South Wales, Australia, running from Sydney through the Illawarra region along the South Coast.
- 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: Greenbush Line Triple: [MBTA Commuter Rail network, hasLine, Greenbush Line]
Generated description
The Greenbush Line is a Massachusetts Bay Transportation Authority commuter rail route serving Boston’s South Station and several South Shore communities.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Greenbush Line Target entity description: The Greenbush Line is a Massachusetts Bay Transportation Authority commuter rail route serving Boston’s South Station and several South Shore communities.
-
A.
Mernda line
The Mernda line is a suburban railway line in Melbourne, Australia, running from the central business district to the northeastern suburb of Mernda as part of the city’s metropolitan train network.
-
B.
Pakenham line
The Pakenham line is a suburban railway line in Melbourne, Australia, running from the central business district to the southeastern suburb of Pakenham as part of the city’s metropolitan train network.
-
C.
Lilydale line
The Lilydale line is a suburban railway line in Melbourne, Australia, running from the central business district to the outer eastern suburb of Lilydale as part of the city’s metropolitan train network.
-
D.
Werribee line
The Werribee line is a suburban railway line in Melbourne, Australia, that runs from the central business district to the southwestern suburb of Werribee as part of the city’s metropolitan train network.
-
E.
Illawarra railway line
The Illawarra railway line is a major suburban and intercity rail corridor in New South Wales, Australia, running from Sydney through the Illawarra region along the South Coast.
- 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_69a498fb823c8190a67ce4c4837e641a |
completed | March 1, 2026, 7:52 p.m. |
| NER | Named-entity recognition | batch_69a4c4bd59148190b96f9f585e07aa0d |
completed | March 1, 2026, 10:59 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ad30877a348190a99dbeaf45cd0335 |
completed | March 8, 2026, 8:17 a.m. |
| NEDg | Description generation | batch_69ad312e77ac8190b931a42317f2cefa |
completed | March 8, 2026, 8:19 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69ad3184853c8190953b288693ce6ea4 |
completed | March 8, 2026, 8:21 a.m. |
Created at: March 1, 2026, 8 p.m.