Triple
T352712
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Porter Square |
E7476
|
entity |
| Predicate | hasTransitStation |
P726
|
FINISHED |
| Object |
Porter station
Porter station is a major MBTA transit hub in Cambridge, Massachusetts, serving both Red Line subway and commuter rail trains beneath Porter Square.
|
E64236
|
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: Porter station | Statement: [Porter Square, hasTransitStation, Porter station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Porter station Context triple: [Porter Square, hasTransitStation, Porter station]
-
A.
Braintree station
Braintree station is a Massachusetts Bay Transportation Authority (MBTA) rapid transit and commuter rail station in Braintree, Massachusetts, serving as a major park-and-ride hub on Boston’s South Shore.
-
B.
Brunswick station
Brunswick station is a passenger rail station in Brunswick, Maryland, serving as the western endpoint of MARC's Brunswick Line commuter service.
-
C.
Copley station
Copley station is a major underground MBTA subway stop in Boston’s Back Bay neighborhood, serving multiple branches of the Green Line and providing access to nearby landmarks like Copley Square and the Boston Public Library.
-
D.
Newton Highlands station
Newton Highlands station is a light rail stop on the Massachusetts Bay Transportation Authority's Green Line D branch located in the Newton Highlands neighborhood of Newton, Massachusetts.
-
E.
Quincy Center station
Quincy Center station is a major MBTA Red Line rapid transit and commuter rail hub located in downtown Quincy, 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: Porter station Triple: [Porter Square, hasTransitStation, Porter station]
Generated description
Porter station is a major MBTA transit hub in Cambridge, Massachusetts, serving both Red Line subway and commuter rail trains beneath Porter Square.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Porter station Target entity description: Porter station is a major MBTA transit hub in Cambridge, Massachusetts, serving both Red Line subway and commuter rail trains beneath Porter Square.
-
A.
Braintree station
Braintree station is a Massachusetts Bay Transportation Authority (MBTA) rapid transit and commuter rail station in Braintree, Massachusetts, serving as a major park-and-ride hub on Boston’s South Shore.
-
B.
Brunswick station
Brunswick station is a passenger rail station in Brunswick, Maryland, serving as the western endpoint of MARC's Brunswick Line commuter service.
-
C.
Copley station
Copley station is a major underground MBTA subway stop in Boston’s Back Bay neighborhood, serving multiple branches of the Green Line and providing access to nearby landmarks like Copley Square and the Boston Public Library.
-
D.
Newton Highlands station
Newton Highlands station is a light rail stop on the Massachusetts Bay Transportation Authority's Green Line D branch located in the Newton Highlands neighborhood of Newton, Massachusetts.
-
E.
Quincy Center station
Quincy Center station is a major MBTA Red Line rapid transit and commuter rail hub located in downtown Quincy, 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_69a2e7e696948190bebc966535995e45 |
completed | Feb. 28, 2026, 1:04 p.m. |
| NER | Named-entity recognition | batch_69a2eb7f1be88190964ddcbb6a05f021 |
completed | Feb. 28, 2026, 1:19 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a4a146fcc8819095b8d793864fbab1 |
completed | March 1, 2026, 8:27 p.m. |
| NEDg | Description generation | batch_69a4a1ef80a081908d6a8663e6069f46 |
completed | March 1, 2026, 8:30 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69a4a3164ee48190b11df515250996f8 |
completed | March 1, 2026, 8:35 p.m. |
Created at: Feb. 28, 2026, 1:08 p.m.