Triple
T7831913
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Lowell Regional Transit Authority |
E181590
|
entity |
| Predicate | connectsTo |
P845
|
FINISHED |
| Object |
MBTA commuter rail at Gallagher Terminal
The MBTA commuter rail at Gallagher Terminal is a regional rail service hub in Lowell, Massachusetts, providing passenger train connections between the city and the greater Boston area.
|
E699291
|
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 Gallagher Terminal | Statement: [Lowell Regional Transit Authority, connectsTo, MBTA commuter rail at Gallagher Terminal]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA commuter rail at Gallagher Terminal Context triple: [Lowell Regional Transit Authority, connectsTo, MBTA commuter rail at Gallagher Terminal]
-
A.
MBTA commuter rail at Back Bay
MBTA commuter rail at Back Bay is a major Boston rail station where regional commuter trains connect with subway services, including the Green Line’s E Branch.
-
B.
MBTA Commuter Rail at South Station
MBTA Commuter Rail at South Station is the regional rail service hub in downtown Boston that provides commuter train connections between the city and surrounding suburbs and cities across Massachusetts and neighboring states.
-
C.
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.
-
D.
MBTA Silver Line at South Station
The MBTA Silver Line at South Station is a key Boston bus rapid transit hub providing underground and surface connections between South Station and destinations including the Seaport District and Logan Airport.
-
E.
MBTA Commuter Rail at Braintree
MBTA Commuter Rail at Braintree is a regional rail station in Braintree, Massachusetts, serving as a key stop on the MBTA’s commuter rail network that links the South Shore suburbs with downtown Boston.
- 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 Gallagher Terminal Triple: [Lowell Regional Transit Authority, connectsTo, MBTA commuter rail at Gallagher Terminal]
Generated description
The MBTA commuter rail at Gallagher Terminal is a regional rail service hub in Lowell, Massachusetts, providing passenger train connections between the city and the greater Boston area.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: MBTA commuter rail at Gallagher Terminal Target entity description: The MBTA commuter rail at Gallagher Terminal is a regional rail service hub in Lowell, Massachusetts, providing passenger train connections between the city and the greater Boston area.
-
A.
MBTA commuter rail at Back Bay
MBTA commuter rail at Back Bay is a major Boston rail station where regional commuter trains connect with subway services, including the Green Line’s E Branch.
-
B.
MBTA Commuter Rail at South Station
MBTA Commuter Rail at South Station is the regional rail service hub in downtown Boston that provides commuter train connections between the city and surrounding suburbs and cities across Massachusetts and neighboring states.
-
C.
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.
-
D.
MBTA Silver Line at South Station
The MBTA Silver Line at South Station is a key Boston bus rapid transit hub providing underground and surface connections between South Station and destinations including the Seaport District and Logan Airport.
-
E.
MBTA Commuter Rail at Braintree
MBTA Commuter Rail at Braintree is a regional rail station in Braintree, Massachusetts, serving as a key stop on the MBTA’s commuter rail network that links the South Shore suburbs with downtown Boston.
- 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_69ca8284a25c8190a1a20afad30da792 |
completed | March 30, 2026, 2:02 p.m. |
| NER | Named-entity recognition | batch_69cb0647848081908d74e09f52d0919e |
completed | March 30, 2026, 11:24 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69cb5a906b908190a204779950555edc |
completed | March 31, 2026, 5:24 a.m. |
| NEDg | Description generation | batch_69cb762ce6208190a24438e26ae83785 |
completed | March 31, 2026, 7:22 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69cbb615dc248190b57b4fc7c430517f |
completed | March 31, 2026, 11:55 a.m. |
Created at: March 30, 2026, 4:44 p.m.