Triple
T3014473
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Commuter Rail Lowell Line |
E82302
|
entity |
| Predicate | endingStation |
P15150
|
FINISHED |
| Object |
Lowell station
Lowell station is a passenger rail station in Lowell, Massachusetts that serves as the northern terminus of the MBTA Commuter Rail’s Lowell Line.
|
E337106
|
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: Lowell station | Statement: [MBTA Commuter Rail Lowell Line, endingStation, Lowell station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Lowell station Context triple: [MBTA Commuter Rail Lowell Line, endingStation, Lowell station]
-
A.
Medford station
Medford station is a Long Island Rail Road commuter rail stop located in Medford, New York, serving passengers on the Ronkonkoma Branch.
-
B.
Medford/Tufts station
Medford/Tufts station is a Massachusetts Bay Transportation Authority light rail station in Medford serving Tufts University and the surrounding area.
-
C.
Fenway station
Fenway station is a light rail stop on Boston’s MBTA Green Line serving the Fenway–Kenmore area near Fenway Park.
-
D.
Wellington Station (MBTA)
Wellington Station (MBTA) is an Orange Line rapid transit station in Medford, Massachusetts, serving as a key park-and-ride and bus transfer hub just north of downtown Boston.
-
E.
Malden Center station
Malden Center station is a major transit hub in Malden, Massachusetts, serving both MBTA Orange Line subway and commuter rail services.
- 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: Lowell station Triple: [MBTA Commuter Rail Lowell Line, endingStation, Lowell station]
Generated description
Lowell station is a passenger rail station in Lowell, Massachusetts that serves as the northern terminus of the MBTA Commuter Rail’s Lowell Line.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Lowell station Target entity description: Lowell station is a passenger rail station in Lowell, Massachusetts that serves as the northern terminus of the MBTA Commuter Rail’s Lowell Line.
-
A.
Medford station
Medford station is a Long Island Rail Road commuter rail stop located in Medford, New York, serving passengers on the Ronkonkoma Branch.
-
B.
Medford/Tufts station
Medford/Tufts station is a Massachusetts Bay Transportation Authority light rail station in Medford serving Tufts University and the surrounding area.
-
C.
Fenway station
Fenway station is a light rail stop on Boston’s MBTA Green Line serving the Fenway–Kenmore area near Fenway Park.
-
D.
Wellington Station (MBTA)
Wellington Station (MBTA) is an Orange Line rapid transit station in Medford, Massachusetts, serving as a key park-and-ride and bus transfer hub just north of downtown Boston.
-
E.
Malden Center station
Malden Center station is a major transit hub in Malden, Massachusetts, serving both MBTA Orange Line subway and commuter rail services.
- 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_69ad8b1eb53481908c39bbcd1ec104b2 |
completed | March 8, 2026, 2:43 p.m. |
| NER | Named-entity recognition | batch_69ad9a69e8148190a97507740c9d26a8 |
completed | March 8, 2026, 3:48 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b261e211c0819094ef28112bcad250 |
completed | March 12, 2026, 6:49 a.m. |
| NEDg | Description generation | batch_69b2627a27f08190a802b74b126f0e81 |
completed | March 12, 2026, 6:51 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69b264cbe2a48190baad7f335cdc37ba |
completed | March 12, 2026, 7:01 a.m. |
Created at: March 8, 2026, 3 p.m.