Triple
T1648997
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Type 9 Light Rail Vehicle |
E35647
|
entity |
| Predicate | introducedOnLine |
P20170
|
FINISHED |
| Object |
Green Line C Branch
The Green Line C Branch is a light rail service of Boston's MBTA Green Line that runs primarily along Beacon Street between downtown Boston and the suburb of Brookline.
|
E238333
|
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: Green Line C Branch | Statement: [MBTA Type 9 Light Rail Vehicle, introducedOnLine, Green Line C Branch]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Green Line C Branch Context triple: [MBTA Type 9 Light Rail Vehicle, introducedOnLine, Green Line C Branch]
-
A.
Green Line E branch
The Green Line E branch is a light rail service of Boston's MBTA Green Line that runs from downtown through the Back Bay and Longwood Medical Area to Heath Street in Jamaica Plain.
-
B.
Green Line B branch
The Green Line B branch is a light rail service of Boston's MBTA Green Line that runs along Commonwealth Avenue, primarily serving Boston University and the Allston–Brighton neighborhoods.
-
C.
Green Line
The Green Line is one of the color-coded rapid transit routes in the Washington Metro system, serving key neighborhoods in Washington, D.C. and parts of Maryland.
-
D.
Green Line
The Green Line is one of the color-coded routes of the Tyne and Wear Metro rapid transit system serving the Newcastle upon Tyne area in northeast England.
-
E.
Green Line
The Green Line is one of the major corridors of the Delhi Metro network, serving western parts of Delhi and connecting key residential and industrial areas to the rest of the city.
- 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: Green Line C Branch Triple: [MBTA Type 9 Light Rail Vehicle, introducedOnLine, Green Line C Branch]
Generated description
The Green Line C Branch is a light rail service of Boston's MBTA Green Line that runs primarily along Beacon Street between downtown Boston and the suburb of Brookline.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Green Line C Branch Target entity description: The Green Line C Branch is a light rail service of Boston's MBTA Green Line that runs primarily along Beacon Street between downtown Boston and the suburb of Brookline.
-
A.
Green Line E branch
The Green Line E branch is a light rail service of Boston's MBTA Green Line that runs from downtown through the Back Bay and Longwood Medical Area to Heath Street in Jamaica Plain.
-
B.
Green Line B branch
The Green Line B branch is a light rail service of Boston's MBTA Green Line that runs along Commonwealth Avenue, primarily serving Boston University and the Allston–Brighton neighborhoods.
-
C.
Green Line
The Green Line is one of the color-coded rapid transit routes in Atlanta’s MARTA rail system, serving key stations on the city’s east–west corridor.
-
D.
Green Line
The Green Line is one of the main rapid transit routes of the Dubai Metro, serving key districts along Dubai Creek and connecting important commercial and residential areas.
-
E.
Green Line
The Green Line is a light rail and subway–surface transit line in Philadelphia operated by SEPTA, serving multiple routes that run through Center City and into West Philadelphia.
- 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_69a8860568888190a32cd9f70acbba42 |
completed | March 4, 2026, 7:20 p.m. |
| NER | Named-entity recognition | batch_69aa61e142ac8190aa2fbd8f0826b5b2 |
completed | March 6, 2026, 5:10 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ae58ac128881909a2e75524682c1c9 |
completed | March 9, 2026, 5:20 a.m. |
| NEDg | Description generation | batch_69ae5944543081909622e93012a31766 |
completed | March 9, 2026, 5:23 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69ae59d0fb688190858c764517aea035 |
completed | March 9, 2026, 5:25 a.m. |
Created at: March 4, 2026, 7:29 p.m.