Triple

T6450753

Position	Surface form	Disambiguated ID	Type / Status
Subject	Bethesda, Maryland	`E139856`	entity
Predicate	servedBy	`P82`	FINISHED
Object	Medical Center station (Washington Metro) Medical Center station is a Washington Metro Red Line station in Bethesda, Maryland, providing access to the National Institutes of Health and the Walter Reed National Military Medical Center.	`E594549`	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: Medical Center station (Washington Metro) | Statement: [Bethesda, Maryland, servedBy, Medical Center station (Washington Metro)]

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

Target entity: Medical Center station (Washington Metro)
Context triple: [Bethesda, Maryland, servedBy, Medical Center station (Washington Metro)]

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. Union Station (Washington Metro)
Union Station is a major Washington Metro station in Washington, D.C., serving as a key transit hub connected to the historic Union Station rail terminal and multiple local and regional transportation services.
C. Capitol Heights station
Capitol Heights station is an elevated Washington Metro station in Prince George's County, Maryland, serving the Blue and Silver Lines near the D.C.–Maryland border.
D. Government Center Metrorail station
Government Center Metrorail station is a major transit hub in Miami that serves as a central connection point for Metrorail, Metromover, and numerous bus routes.
E. Fort Totten station (Washington Metro)
Fort Totten station (Washington Metro) is a major Washington, D.C. Metrorail transfer station where multiple lines intersect, serving the Fort Totten neighborhood and surrounding areas.
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: Medical Center station (Washington Metro)
Triple: [Bethesda, Maryland, servedBy, Medical Center station (Washington Metro)]

Generated description

Medical Center station is a Washington Metro Red Line station in Bethesda, Maryland, providing access to the National Institutes of Health and the Walter Reed National Military Medical Center.

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

Target entity: Medical Center station (Washington Metro)
Target entity description: Medical Center station is a Washington Metro Red Line station in Bethesda, Maryland, providing access to the National Institutes of Health and the Walter Reed National Military Medical Center.

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. Union Station (Washington Metro)
Union Station is a major Washington Metro station in Washington, D.C., serving as a key transit hub connected to the historic Union Station rail terminal and multiple local and regional transportation services.
C. Capitol Heights station
Capitol Heights station is an elevated Washington Metro station in Prince George's County, Maryland, serving the Blue and Silver Lines near the D.C.–Maryland border.
D. Government Center Metrorail station
Government Center Metrorail station is a major transit hub in Miami that serves as a central connection point for Metrorail, Metromover, and numerous bus routes.
E. Fort Totten station (Washington Metro)
Fort Totten station (Washington Metro) is a major Washington, D.C. Metrorail transfer station where multiple lines intersect, serving the Fort Totten neighborhood and surrounding areas.
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_69c008b301948190a35854e5284dc822`	completed	March 22, 2026, 3:20 p.m.
NER	Named-entity recognition	`batch_69c069b4171c8190b0acad78700998ed`	completed	March 22, 2026, 10:14 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69c64bd290c481909f543cc03eee98bf`	completed	March 27, 2026, 9:20 a.m.
NEDg	Description generation	`batch_69c64dce99fc819089fbe8925dc52b7a`	completed	March 27, 2026, 9:28 a.m.
NED2	Entity disambiguation (via description)	`batch_69c64e5cd1b88190abcdc8af02991d1d`	completed	March 27, 2026, 9:31 a.m.

Created at: March 22, 2026, 4:47 p.m.