Triple

T2742286

Position	Surface form	Disambiguated ID	Type / Status
Subject	Pennsylvania Avenue National Historic Site	`E60777`	entity
Predicate	contains	`P35`	FINISHED
Object	U.S. Environmental Protection Agency Headquarters The U.S. Environmental Protection Agency Headquarters is the central administrative complex of the federal agency responsible for enforcing national environmental laws and regulations in the United States.	`E295278`	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: U.S. Environmental Protection Agency Headquarters | Statement: [Pennsylvania Avenue National Historic Site, contains, U.S. Environmental Protection Agency Headquarters]

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

Target entity: U.S. Environmental Protection Agency Headquarters
Context triple: [Pennsylvania Avenue National Historic Site, contains, U.S. Environmental Protection Agency Headquarters]

A. GAO Building
The GAO Building is the main Washington, D.C. office complex that serves as the central workplace for the U.S. Government Accountability Office’s oversight and auditing operations.
B. Federal Trade Commission Building
The Federal Trade Commission Building is a prominent neoclassical government office structure in Washington, D.C., serving as the headquarters of the U.S. Federal Trade Commission.
C. National Academy of Sciences Building
The National Academy of Sciences Building is a historic Beaux-Arts landmark in Washington, D.C., serving as the headquarters and principal meeting place of the National Academy of Sciences.
D. Southwest Federal Center
Southwest Federal Center is a major federal office district in southwest Washington, D.C., housing numerous U.S. government agency headquarters and office buildings.
E. United States International Trade Commission Building
The United States International Trade Commission Building is a modernist federal office building in Washington, D.C., designed by architect James Ingo Freed.
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: U.S. Environmental Protection Agency Headquarters
Triple: [Pennsylvania Avenue National Historic Site, contains, U.S. Environmental Protection Agency Headquarters]

Generated description

The U.S. Environmental Protection Agency Headquarters is the central administrative complex of the federal agency responsible for enforcing national environmental laws and regulations in the United States.

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

Target entity: U.S. Environmental Protection Agency Headquarters
Target entity description: The U.S. Environmental Protection Agency Headquarters is the central administrative complex of the federal agency responsible for enforcing national environmental laws and regulations in the United States.

A. GAO Building
The GAO Building is the main Washington, D.C. office complex that serves as the central workplace for the U.S. Government Accountability Office’s oversight and auditing operations.
B. Federal Trade Commission Building
The Federal Trade Commission Building is a prominent neoclassical government office structure in Washington, D.C., serving as the headquarters of the U.S. Federal Trade Commission.
C. National Academy of Sciences Building
The National Academy of Sciences Building is a historic Beaux-Arts landmark in Washington, D.C., serving as the headquarters and principal meeting place of the National Academy of Sciences.
D. Southwest Federal Center
Southwest Federal Center is a major federal office district in southwest Washington, D.C., housing numerous U.S. government agency headquarters and office buildings.
E. United States International Trade Commission Building
The United States International Trade Commission Building is a modernist federal office building in Washington, D.C., designed by architect James Ingo Freed.
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_69ab4b77febc819095603eb012cd141b`	completed	March 6, 2026, 9:47 p.m.
NER	Named-entity recognition	`batch_69abdb303898819098a7d192e29817f8`	completed	March 7, 2026, 8 a.m.
NED1	Entity disambiguation (via context triple)	`batch_69afbbcca19881908b2e2eb0478c3e45`	completed	March 10, 2026, 6:35 a.m.
NEDg	Description generation	`batch_69afbc758cc48190a96f80a850316ce3`	completed	March 10, 2026, 6:38 a.m.
NED2	Entity disambiguation (via description)	`batch_69afbd7be9088190a19bed27249e95c4`	completed	March 10, 2026, 6:43 a.m.

Created at: March 6, 2026, 9:56 p.m.