Triple

T1925803

Position	Surface form	Disambiguated ID	Type / Status
Subject	Northeast Washington, D.C.	`E40827`	entity
Predicate	hasLandmark	`P105`	FINISHED
Object	Union Station vicinity (eastern side) Union Station vicinity (eastern side) is the area surrounding the eastern approaches to Washington, D.C.’s historic Union Station, characterized by major transportation facilities, civic buildings, and mixed-use urban development.	`E215622`	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: Union Station vicinity (eastern side) | Statement: [Northeast Washington, D.C., hasLandmark, Union Station vicinity (eastern side)]

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

Target entity: Union Station vicinity (eastern side)
Context triple: [Northeast Washington, D.C., hasLandmark, Union Station vicinity (eastern side)]

A. Van Ness–UDC station
Van Ness–UDC station is a Washington Metro Red Line station in Northwest D.C. serving the Van Ness neighborhood and the University of the District of Columbia.
B. Federal Triangle station
Federal Triangle station is a Washington Metro rapid transit station located in downtown Washington, D.C., serving the Blue, Orange, and Silver lines near key federal buildings and the National Mall.
C. Market East Station
Market East Station, now known as Jefferson Station, is a major underground commuter rail hub in Center City Philadelphia that serves SEPTA Regional Rail lines and connects to nearby transit and downtown destinations.
D. McPherson Square station
McPherson Square station is a Washington Metro rapid transit station in downtown Washington, D.C., serving the area near the White House and major federal and commercial buildings.
E. Eastern Market station
Eastern Market station is a Washington Metro rapid transit stop in Washington, D.C., serving the Capitol Hill neighborhood on multiple lines.
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: Union Station vicinity (eastern side)
Triple: [Northeast Washington, D.C., hasLandmark, Union Station vicinity (eastern side)]

Generated description

Union Station vicinity (eastern side) is the area surrounding the eastern approaches to Washington, D.C.’s historic Union Station, characterized by major transportation facilities, civic buildings, and mixed-use urban development.

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

Target entity: Union Station vicinity (eastern side)
Target entity description: Union Station vicinity (eastern side) is the area surrounding the eastern approaches to Washington, D.C.’s historic Union Station, characterized by major transportation facilities, civic buildings, and mixed-use urban development.

A. Van Ness–UDC station
Van Ness–UDC station is a Washington Metro Red Line station in Northwest D.C. serving the Van Ness neighborhood and the University of the District of Columbia.
B. Federal Triangle station
Federal Triangle station is a Washington Metro rapid transit station located in downtown Washington, D.C., serving the Blue, Orange, and Silver lines near key federal buildings and the National Mall.
C. Market East Station
Market East Station, now known as Jefferson Station, is a major underground commuter rail hub in Center City Philadelphia that serves SEPTA Regional Rail lines and connects to nearby transit and downtown destinations.
D. McPherson Square station
McPherson Square station is a Washington Metro rapid transit station in downtown Washington, D.C., serving the area near the White House and major federal and commercial buildings.
E. Eastern Market station
Eastern Market station is a Washington Metro rapid transit stop in Washington, D.C., serving the Capitol Hill neighborhood on multiple lines.
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_69a8864711648190b07bed24ed76258e`	completed	March 4, 2026, 7:21 p.m.
NER	Named-entity recognition	`batch_69abb260da088190ac53bfc9437e112b`	completed	March 7, 2026, 5:06 a.m.
NED1	Entity disambiguation (via context triple)	`batch_69adf3e881748190b00f125185e91271`	completed	March 8, 2026, 10:10 p.m.
NEDg	Description generation	`batch_69adf494f0288190bf77285d18fcd3d9`	completed	March 8, 2026, 10:13 p.m.
NED2	Entity disambiguation (via description)	`batch_69adf51f49488190b9b0465b4da685c1`	completed	March 8, 2026, 10:15 p.m.

Created at: March 4, 2026, 7:35 p.m.