Triple
T256746
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Central Square |
E5451
|
entity |
| Predicate | hasTransportation |
P105
|
FINISHED |
| Object |
Central station (MBTA) on the Red Line
Central station (MBTA) on the Red Line is an underground rapid transit stop in Cambridge, Massachusetts, serving the Central Square neighborhood on the Massachusetts Bay Transportation Authority’s Red Line.
|
E33105
|
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: Central station (MBTA) on the Red Line | Statement: [Central Square, hasTransportation, Central station (MBTA) on the Red Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Central station (MBTA) on the Red Line Context triple: [Central Square, hasTransportation, Central station (MBTA) on the Red Line]
-
A.
MBTA Red Line
The MBTA Red Line is a major rapid transit line in the Boston metropolitan area that runs through key communities including Cambridge, connecting them to downtown Boston and other parts of the region.
-
B.
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.
-
C.
Aquarium station (MBTA Blue Line)
Aquarium station (MBTA Blue Line) is an underground Massachusetts Bay Transportation Authority subway station in downtown Boston serving the Blue Line near the city’s waterfront and tourist attractions.
-
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.
CTA Red Line Sox–35th station
CTA Red Line Sox–35th station is a Chicago Transit Authority rapid transit stop on the Red Line that serves the Bridgeport neighborhood and provides access to the Chicago White Sox’s home ballpark.
- 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: Central station (MBTA) on the Red Line Triple: [Central Square, hasTransportation, Central station (MBTA) on the Red Line]
Generated description
Central station (MBTA) on the Red Line is an underground rapid transit stop in Cambridge, Massachusetts, serving the Central Square neighborhood on the Massachusetts Bay Transportation Authority’s Red Line.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Central station (MBTA) on the Red Line Target entity description: Central station (MBTA) on the Red Line is an underground rapid transit stop in Cambridge, Massachusetts, serving the Central Square neighborhood on the Massachusetts Bay Transportation Authority’s Red Line.
-
A.
MBTA Red Line
The MBTA Red Line is a major rapid transit line in the Boston metropolitan area that runs through key communities including Cambridge, connecting them to downtown Boston and other parts of the region.
-
B.
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.
-
C.
Aquarium station (MBTA Blue Line)
Aquarium station (MBTA Blue Line) is an underground Massachusetts Bay Transportation Authority subway station in downtown Boston serving the Blue Line near the city’s waterfront and tourist attractions.
-
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.
CTA Red Line Sox–35th station
CTA Red Line Sox–35th station is a Chicago Transit Authority rapid transit stop on the Red Line that serves the Bridgeport neighborhood and provides access to the Chicago White Sox’s home ballpark.
- 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_69a2580a64ac8190ad76e34bb0715b5e |
completed | Feb. 28, 2026, 2:50 a.m. |
| NER | Named-entity recognition | batch_69a25d5884c88190a349d7593b688921 |
completed | Feb. 28, 2026, 3:13 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a37958242c81909d114fba70b4211c |
completed | Feb. 28, 2026, 11:25 p.m. |
| NEDg | Description generation | batch_69a379b2662c81909903c43b544dda06 |
completed | Feb. 28, 2026, 11:26 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69a37a5bdbb08190a0b8a053adc6c797 |
completed | Feb. 28, 2026, 11:29 p.m. |
Created at: Feb. 28, 2026, 2:55 a.m.