Triple
T1964
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Belmont, Massachusetts |
E36
|
entity |
| Predicate | hasCommuterRailStation |
P105
|
FINISHED |
| Object |
Belmont Center station
Belmont Center station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail stop located in the commercial center of Belmont, Massachusetts.
|
E461
|
NE FINISHED |
How this triple was built (5 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: Belmont Center station | Statement: [Belmont, Massachusetts, hasCommuterRailStation, Belmont Center station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Belmont Center station Context triple: [Belmont, Massachusetts, hasCommuterRailStation, Belmont Center station]
-
A.
Union Station
Union Station is a historic Beaux-Arts transportation hub and major intercity rail terminal in Washington, D.C., serving as a gateway to the U.S. capital.
-
B.
Waverley station
Waverley station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail stop in Belmont, Massachusetts, serving the Fitchburg Line.
-
C.
Washington Metro
Washington Metro is the rapid transit system serving the Washington, D.C. metropolitan area, known for its extensive rail network connecting the city with its suburbs in Maryland and Virginia.
-
D.
Carnegie
Carnegie is a Scottish surname most famously associated with industrialist and philanthropist Andrew Carnegie.
-
E.
MBTA Fitchburg Line
The MBTA Fitchburg Line is a commuter rail route in the Greater Boston area that runs between Boston and Fitchburg, serving numerous suburban communities along the way.
- 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: Belmont Center station Triple: [Belmont, Massachusetts, hasCommuterRailStation, Belmont Center station]
Generated description
Belmont Center station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail stop located in the commercial center of Belmont, Massachusetts.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Belmont Center station Target entity description: Belmont Center station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail stop located in the commercial center of Belmont, Massachusetts.
-
A.
Union Station
Union Station is a historic Beaux-Arts transportation hub and major intercity rail terminal in Washington, D.C., serving as a gateway to the U.S. capital.
-
B.
Waverley station
Waverley station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail stop in Belmont, Massachusetts, serving the Fitchburg Line.
-
C.
Washington Metro
Washington Metro is the rapid transit system serving the Washington, D.C. metropolitan area, known for its extensive rail network connecting the city with its suburbs in Maryland and Virginia.
-
D.
Carnegie
Carnegie is a Scottish surname most famously associated with industrialist and philanthropist Andrew Carnegie.
-
E.
MBTA Fitchburg Line
The MBTA Fitchburg Line is a commuter rail route in the Greater Boston area that runs between Boston and Fitchburg, serving numerous suburban communities along the way.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: hasCommuterRailStation Context triple: [Belmont, Massachusetts, hasCommuterRailStation, Belmont Center station]
-
A.
adjacentToInfrastructure
Indicates that one entity is located directly next to or in immediate proximity to a piece of infrastructure.
-
B.
hasMainCampus
Indicates that an educational institution is primarily based at or chiefly associated with a particular campus location.
-
C.
isMajorCenterOf
Indicates that a place serves as a primary hub or focal point for a particular activity, function, or domain.
-
D.
hasNotableFacility
chosen
Indicates that an entity possesses or hosts a facility that is of particular significance, prominence, or interest.
-
E.
hasAreaCode
Indicates that a specified telephone area code is assigned to or associated with a particular geographic region, location, or phone service entity.
- F. None of above.
Provenance (6 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_69a22cde80848190b62c5f556b4d62ba |
completed | Feb. 27, 2026, 11:46 p.m. |
| NER | Named-entity recognition | batch_69a23344daf8819083118bbac5f46568 |
completed | Feb. 28, 2026, 12:13 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a23d860c2881909010e0310acaf10f |
completed | Feb. 28, 2026, 12:57 a.m. |
| NEDg | Description generation | batch_69a23ffe6b4081908f9d04b169a7bed8 |
completed | Feb. 28, 2026, 1:08 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a2406bedd081909e8704cef5ab08dd |
completed | Feb. 28, 2026, 1:10 a.m. |
| PD | Predicate disambiguation | batch_69a232e52e7c81909c072703e28e8c61 |
completed | Feb. 28, 2026, 12:12 a.m. |
Created at: Feb. 27, 2026, 11:48 p.m.