Triple
T6201276
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | E Branch |
E138635
|
entity |
| Predicate | connectsWith |
P37
|
FINISHED |
| Object |
MBTA commuter rail at Ruggles via nearby stops
The MBTA commuter rail at Ruggles via nearby stops is a regional rail service hub in Boston that connects suburban lines with the city’s transit network, including the Green Line’s E Branch.
|
E575881
|
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: MBTA commuter rail at Ruggles via nearby stops | Statement: [E Branch, connectsWith, MBTA commuter rail at Ruggles via nearby stops]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA commuter rail at Ruggles via nearby stops Context triple: [E Branch, connectsWith, MBTA commuter rail at Ruggles via nearby stops]
-
A.
MBTA commuter rail terminals
MBTA commuter rail terminals are major passenger rail hubs in the Boston area that serve as endpoints and transfer points for regional trains connecting the city with its surrounding suburbs and communities.
-
B.
MBTA Commuter Rail at Fenway station (nearby Yawkey/Lansdowne)
MBTA Commuter Rail at Fenway station (nearby Yawkey/Lansdowne) is a regional rail stop in Boston’s Fenway area that provides commuter rail access near Fenway Park and connects with the Green Line D branch.
-
C.
MBTA Commuter Rail coaches
MBTA Commuter Rail coaches are bi-level and single-level passenger railcars used by the Massachusetts Bay Transportation Authority to provide regional rail service across Greater Boston and surrounding areas.
-
D.
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.
-
E.
MBTA Commuter Rail network
The MBTA Commuter Rail network is a regional passenger rail system serving Greater Boston and surrounding communities in Massachusetts and parts of Rhode Island.
- 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: MBTA commuter rail at Ruggles via nearby stops Triple: [E Branch, connectsWith, MBTA commuter rail at Ruggles via nearby stops]
Generated description
The MBTA commuter rail at Ruggles via nearby stops is a regional rail service hub in Boston that connects suburban lines with the city’s transit network, including the Green Line’s E Branch.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: MBTA commuter rail at Ruggles via nearby stops Target entity description: The MBTA commuter rail at Ruggles via nearby stops is a regional rail service hub in Boston that connects suburban lines with the city’s transit network, including the Green Line’s E Branch.
-
A.
MBTA commuter rail terminals
MBTA commuter rail terminals are major passenger rail hubs in the Boston area that serve as endpoints and transfer points for regional trains connecting the city with its surrounding suburbs and communities.
-
B.
MBTA Commuter Rail at Fenway station (nearby Yawkey/Lansdowne)
MBTA Commuter Rail at Fenway station (nearby Yawkey/Lansdowne) is a regional rail stop in Boston’s Fenway area that provides commuter rail access near Fenway Park and connects with the Green Line D branch.
-
C.
MBTA Commuter Rail coaches
MBTA Commuter Rail coaches are bi-level and single-level passenger railcars used by the Massachusetts Bay Transportation Authority to provide regional rail service across Greater Boston and surrounding areas.
-
D.
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.
-
E.
MBTA Commuter Rail network
The MBTA Commuter Rail network is a regional passenger rail system serving Greater Boston and surrounding communities in Massachusetts and parts of Rhode Island.
- 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_69c008acbea48190991c6b834bb45d65 |
completed | March 22, 2026, 3:20 p.m. |
| NER | Named-entity recognition | batch_69c062559bcc81908942bb4d25fe8158 |
completed | March 22, 2026, 9:42 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c16f366cfc81909cca73677268821a |
completed | March 23, 2026, 4:49 p.m. |
| NEDg | Description generation | batch_69c1e375c5948190ad166089e866694a |
completed | March 24, 2026, 1:05 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69c1e43fa8348190a2247996d88b5011 |
completed | March 24, 2026, 1:09 a.m. |
Created at: March 22, 2026, 4:20 p.m.