Triple

T1425616

Position	Surface form	Disambiguated ID	Type / Status
Subject	Ashburn, Virginia	`E30324`	entity
Predicate	servedBy	`P82`	FINISHED
Object	Washington Metro Silver Line (nearby stations) The Washington Metro Silver Line is a rapid transit line in the Washington, D.C. metropolitan area that extends service into Northern Virginia suburbs, including stations near Ashburn.	`E164614`	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: Washington Metro Silver Line (nearby stations) | Statement: [Ashburn, Virginia, servedBy, Washington Metro Silver Line (nearby stations)]

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Washington Metro Silver Line (nearby stations)
Context triple: [Ashburn, Virginia, servedBy, Washington Metro Silver Line (nearby stations)]

A. Crystal City station (Washington Metro)
Crystal City station (Washington Metro) is an underground rapid transit station in Arlington, Virginia, serving the Blue and Yellow Lines and providing access to the Crystal City business district near Reagan National Airport.
B. Washington Metro Green Line
The Washington Metro Green Line is a rapid transit line in the Washington, D.C. metropolitan area that runs north–south through the city and into surrounding suburbs, including Prince George’s County, Maryland.
C. Blue Line (Washington Metro)
The Blue Line is one of the primary rapid transit lines of the Washington Metro system, running through downtown Washington, D.C., and connecting key locations in Virginia and Maryland.
D. Washington Metro Yellow Line
The Washington Metro Yellow Line is a rapid transit line in the Washington, D.C. metropolitan area that runs north–south through the city and into Virginia, serving key hubs including downtown Washington and Alexandria.
E. Orange Line (Washington Metro)
The Orange Line of the Washington Metro is a rapid transit line in the Washington, D.C. metropolitan area that runs generally east–west, connecting suburbs in Virginia and Maryland with downtown Washington.
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: Washington Metro Silver Line (nearby stations)
Triple: [Ashburn, Virginia, servedBy, Washington Metro Silver Line (nearby stations)]

Generated description

The Washington Metro Silver Line is a rapid transit line in the Washington, D.C. metropolitan area that extends service into Northern Virginia suburbs, including stations near Ashburn.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Washington Metro Silver Line (nearby stations)
Target entity description: The Washington Metro Silver Line is a rapid transit line in the Washington, D.C. metropolitan area that extends service into Northern Virginia suburbs, including stations near Ashburn.

A. Crystal City station (Washington Metro)
Crystal City station (Washington Metro) is an underground rapid transit station in Arlington, Virginia, serving the Blue and Yellow Lines and providing access to the Crystal City business district near Reagan National Airport.
B. Washington Metro Green Line
The Washington Metro Green Line is a rapid transit line in the Washington, D.C. metropolitan area that runs north–south through the city and into surrounding suburbs, including Prince George’s County, Maryland.
C. Blue Line (Washington Metro)
The Blue Line is one of the primary rapid transit lines of the Washington Metro system, running through downtown Washington, D.C., and connecting key locations in Virginia and Maryland.
D. Washington Metro Yellow Line
The Washington Metro Yellow Line is a rapid transit line in the Washington, D.C. metropolitan area that runs north–south through the city and into Virginia, serving key hubs including downtown Washington and Alexandria.
E. Orange Line (Washington Metro)
The Orange Line of the Washington Metro is a rapid transit line in the Washington, D.C. metropolitan area that runs generally east–west, connecting suburbs in Virginia and Maryland with downtown Washington.
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_69a498fb823c8190a67ce4c4837e641a`	completed	March 1, 2026, 7:52 p.m.
NER	Named-entity recognition	`batch_69a4c4bd59148190b96f9f585e07aa0d`	completed	March 1, 2026, 10:59 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69ad01646fd481909fcd92a1cc027fa2`	completed	March 8, 2026, 4:56 a.m.
NEDg	Description generation	`batch_69ad022095f88190a68f40a56c7e1729`	completed	March 8, 2026, 4:59 a.m.
NED2	Entity disambiguation (via description)	`batch_69ad031af0c8819095df7bd413915c14`	completed	March 8, 2026, 5:03 a.m.

Created at: March 1, 2026, 8 p.m.