Triple
T570624
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Green Line (Washington Metro) |
E13654
|
entity |
| Predicate | terminusNorth |
P3375
|
FINISHED |
| Object |
Greenbelt station
Greenbelt station is a Washington Metro station in Maryland that serves as a major park-and-ride hub and northern gateway to the system.
|
E71532
|
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: Greenbelt station | Statement: [Green Line (Washington Metro), terminusNorth, Greenbelt station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Greenbelt station Context triple: [Green Line (Washington Metro), terminusNorth, Greenbelt station]
-
A.
Lansdowne station
Lansdowne station is a commuter rail stop on the MBTA Framingham/Worcester Line in Boston, Massachusetts, serving the Fenway–Kenmore area and providing convenient access to Fenway Park.
-
B.
Loudoun Gateway station
Loudoun Gateway station is a Silver Line Metrorail station in Loudoun County, Virginia, serving as part of the Washington, D.C. region’s rapid transit network.
-
C.
Hunt Valley station
Hunt Valley station is a light rail transit station in Hunt Valley, Maryland, serving as the northern endpoint of the Baltimore Light RailLink system.
-
D.
Newton Centre station
Newton Centre station is a light rail stop in Newton, Massachusetts, serving the MBTA Green Line’s D branch on the Boston-area transit system.
-
E.
Woodland station
Woodland station is a light rail stop on Boston’s MBTA Green Line D branch serving the Newton area.
- 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: Greenbelt station Triple: [Green Line (Washington Metro), terminusNorth, Greenbelt station]
Generated description
Greenbelt station is a Washington Metro station in Maryland that serves as a major park-and-ride hub and northern gateway to the system.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Greenbelt station Target entity description: Greenbelt station is a Washington Metro station in Maryland that serves as a major park-and-ride hub and northern gateway to the system.
-
A.
Lansdowne station
Lansdowne station is a commuter rail stop on the MBTA Framingham/Worcester Line in Boston, Massachusetts, serving the Fenway–Kenmore area and providing convenient access to Fenway Park.
-
B.
Loudoun Gateway station
Loudoun Gateway station is a Silver Line Metrorail station in Loudoun County, Virginia, serving as part of the Washington, D.C. region’s rapid transit network.
-
C.
Hunt Valley station
Hunt Valley station is a light rail transit station in Hunt Valley, Maryland, serving as the northern endpoint of the Baltimore Light RailLink system.
-
D.
Newton Centre station
Newton Centre station is a light rail stop in Newton, Massachusetts, serving the MBTA Green Line’s D branch on the Boston-area transit system.
-
E.
Woodland station
Woodland station is a light rail stop on Boston’s MBTA Green Line D branch serving the Newton area.
- 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_69a4933fa4d88190a7949cc83c08c5c1 |
completed | March 1, 2026, 7:27 p.m. |
| NER | Named-entity recognition | batch_69a49b057e708190b4e5975516e58993 |
completed | March 1, 2026, 8:01 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a4fc8475d881909e80d60fbb50c271 |
completed | March 2, 2026, 2:57 a.m. |
| NEDg | Description generation | batch_69a4fd2938288190b00cb79a10d91150 |
completed | March 2, 2026, 2:59 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a4fdb5f42c81908ce753cd4283962c |
completed | March 2, 2026, 3:02 a.m. |
Created at: March 1, 2026, 7:33 p.m.