Triple
T269509
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Green Line D branch |
E5598
|
entity |
| Predicate | servesInstitutionNearby |
P6776
|
FINISHED |
| Object |
Northeastern University (via nearby E branch transfer at Park Street)
Northeastern University is a private research university in Boston, Massachusetts, known for its cooperative education (co-op) programs that integrate classroom study with professional experience.
|
E34908
|
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: Northeastern University (via nearby E branch transfer at Park Street) | Statement: [MBTA Green Line D branch, servesInstitutionNearby, Northeastern University (via nearby E branch transfer at Park Street)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Northeastern University (via nearby E branch transfer at Park Street) Context triple: [MBTA Green Line D branch, servesInstitutionNearby, Northeastern University (via nearby E branch transfer at Park Street)]
-
A.
MBTA Green Line D branch (nearby stations)
The MBTA Green Line D branch is a light rail line in Greater Boston that runs between downtown Boston and several western suburbs, including Newton, providing frequent local transit service.
-
B.
Porter (MBTA station)
Porter (MBTA station) is a transit station in Cambridge, Massachusetts, serving the MBTA Red Line subway and commuter rail with a notably deep underground platform.
-
C.
Boston’s North Station (via Fitchburg Line)
Boston’s North Station (via Fitchburg Line) is a major MBTA commuter rail terminal in Boston that serves as the downtown endpoint for the Fitchburg Line and several other northside rail routes.
-
D.
MBTA Green Line E branch
The MBTA Green Line E branch is a light rail line in Boston that runs from downtown through the Back Bay and Longwood Medical Area to Heath Street, serving major hospitals, universities, and residential neighborhoods.
-
E.
MBTA Silver Hill station
MBTA Silver Hill station is a small commuter rail stop on the Massachusetts Bay Transportation Authority’s Fitchburg Line serving the Silver Hill neighborhood of Weston, Massachusetts.
- 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: Northeastern University (via nearby E branch transfer at Park Street) Triple: [MBTA Green Line D branch, servesInstitutionNearby, Northeastern University (via nearby E branch transfer at Park Street)]
Generated description
Northeastern University is a private research university in Boston, Massachusetts, known for its cooperative education (co-op) programs that integrate classroom study with professional experience.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Northeastern University (via nearby E branch transfer at Park Street) Target entity description: Northeastern University is a private research university in Boston, Massachusetts, known for its cooperative education (co-op) programs that integrate classroom study with professional experience.
-
A.
MBTA Green Line D branch (nearby stations)
The MBTA Green Line D branch is a light rail line in Greater Boston that runs between downtown Boston and several western suburbs, including Newton, providing frequent local transit service.
-
B.
Porter (MBTA station)
Porter (MBTA station) is a transit station in Cambridge, Massachusetts, serving the MBTA Red Line subway and commuter rail with a notably deep underground platform.
-
C.
Boston’s North Station (via Fitchburg Line)
Boston’s North Station (via Fitchburg Line) is a major MBTA commuter rail terminal in Boston that serves as the downtown endpoint for the Fitchburg Line and several other northside rail routes.
-
D.
MBTA Green Line E branch
The MBTA Green Line E branch is a light rail line in Boston that runs from downtown through the Back Bay and Longwood Medical Area to Heath Street, serving major hospitals, universities, and residential neighborhoods.
-
E.
MBTA Silver Hill station
MBTA Silver Hill station is a small commuter rail stop on the Massachusetts Bay Transportation Authority’s Fitchburg Line serving the Silver Hill neighborhood of Weston, Massachusetts.
- 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_69a25853594c8190b05ec3a586ec88bf |
completed | Feb. 28, 2026, 2:52 a.m. |
| NER | Named-entity recognition | batch_69a260cfb4cc81909771b2d496b84726 |
completed | Feb. 28, 2026, 3:28 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a38b9220f08190a94ffd00bb7425fd |
completed | March 1, 2026, 12:42 a.m. |
| NEDg | Description generation | batch_69a38cb1d5808190b548efd55de09523 |
completed | March 1, 2026, 12:47 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a38d10782c8190beead28963b003ab |
completed | March 1, 2026, 12:49 a.m. |
Created at: Feb. 28, 2026, 2:57 a.m.