Triple
T141745
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA |
E2866
|
entity |
| Predicate | predecessor |
P97
|
FINISHED |
| Object |
Metropolitan Transit Authority
The Metropolitan Transit Authority was a former public agency that operated and managed mass transit services in the Boston metropolitan area before being succeeded by the MBTA.
|
E21867
|
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: Metropolitan Transit Authority | Statement: [MBTA, predecessor, Metropolitan Transit Authority]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Metropolitan Transit Authority Context triple: [MBTA, predecessor, Metropolitan Transit Authority]
-
A.
Metropolitan Transportation Authority
The Metropolitan Transportation Authority is the public agency responsible for operating and overseeing much of the mass transit and commuter rail systems in the New York City metropolitan area.
-
B.
Transit Bureau
The Transit Bureau is the division of the New York City Police Department responsible for policing and ensuring safety within the city’s public transit system, particularly the subway.
-
C.
Maryland Transit Administration
The Maryland Transit Administration is the state agency responsible for operating and overseeing public transportation services in Maryland, including bus, rail, and commuter transit systems.
-
D.
Interborough Rapid Transit Company
The Interborough Rapid Transit Company was the private operator that built and ran New York City's first subway lines in the early 20th century before they were incorporated into the modern NYC Subway system.
-
E.
Tompkins Consolidated Area Transit
Tompkins Consolidated Area Transit is the primary public bus system serving Ithaca and the surrounding Tompkins County region in New York.
- 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: Metropolitan Transit Authority Triple: [MBTA, predecessor, Metropolitan Transit Authority]
Generated description
The Metropolitan Transit Authority was a former public agency that operated and managed mass transit services in the Boston metropolitan area before being succeeded by the MBTA.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Metropolitan Transit Authority Target entity description: The Metropolitan Transit Authority was a former public agency that operated and managed mass transit services in the Boston metropolitan area before being succeeded by the MBTA.
-
A.
Metropolitan Transportation Authority
The Metropolitan Transportation Authority is the public agency responsible for operating and overseeing much of the mass transit and commuter rail systems in the New York City metropolitan area.
-
B.
Transit Bureau
The Transit Bureau is the division of the New York City Police Department responsible for policing and ensuring safety within the city’s public transit system, particularly the subway.
-
C.
Maryland Transit Administration
The Maryland Transit Administration is the state agency responsible for operating and overseeing public transportation services in Maryland, including bus, rail, and commuter transit systems.
-
D.
Interborough Rapid Transit Company
The Interborough Rapid Transit Company was the private operator that built and ran New York City's first subway lines in the early 20th century before they were incorporated into the modern NYC Subway system.
-
E.
Tompkins Consolidated Area Transit
Tompkins Consolidated Area Transit is the primary public bus system serving Ithaca and the surrounding Tompkins County region in New York.
- 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_69a2521e35c08190b28e5c9f1e3c9b59 |
completed | Feb. 28, 2026, 2:25 a.m. |
| NER | Named-entity recognition | batch_69a257c9cab8819095e8d9fa32c1fbc6 |
completed | Feb. 28, 2026, 2:49 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a2eb788a888190bbb53e82559abbf3 |
completed | Feb. 28, 2026, 1:19 p.m. |
| NEDg | Description generation | batch_69a2ebe5644481908e221cc8724c99ae |
completed | Feb. 28, 2026, 1:21 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69a2ec56b5208190a60feb32c732cebc |
completed | Feb. 28, 2026, 1:23 p.m. |
Created at: Feb. 28, 2026, 2:31 a.m.