Triple

T8671520

Position	Surface form	Disambiguated ID	Type / Status
Subject	Urban Mass Transportation Act of 1964	`E205807`	entity
Predicate	createdAgency	`P3139`	FINISHED
Object	Urban Mass Transportation Administration The Urban Mass Transportation Administration was a former U.S. federal agency responsible for funding and overseeing public transit systems in urban areas.	`E750148`	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: Urban Mass Transportation Administration | Statement: [Urban Mass Transportation Act of 1964, createdAgency, Urban Mass Transportation Administration]

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

Target entity: Urban Mass Transportation Administration
Context triple: [Urban Mass Transportation Act of 1964, createdAgency, Urban Mass Transportation Administration]

A. Metropolitan Transit Authority
The Metropolitan Transit Authority was a former public agency that operated and managed mass transit services in the Boston metropolitan area before being succeeded by the MBTA.
B. Capital Metropolitan Transportation Authority
Capital Metropolitan Transportation Authority is the public transit agency that operates bus, rail, and paratransit services throughout the Austin, Texas region.
C. Metropolitan Transportation Authority
The Metropolitan Transportation Authority is the public agency responsible for operating and overseeing much of the mass transit and commuter rail systems in the New York City metropolitan area.
D. New York City Transit Authority
The New York City Transit Authority is the public agency responsible for operating most of New York City's subway and bus system as part of the Metropolitan Transportation Authority (MTA).
E. Brooklyn–Manhattan Transit Corporation
The Brooklyn–Manhattan Transit Corporation was a major early 20th-century New York City rapid transit company that operated subways and elevated lines in Brooklyn and Manhattan before being absorbed into the city’s unified transit system.
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: Urban Mass Transportation Administration
Triple: [Urban Mass Transportation Act of 1964, createdAgency, Urban Mass Transportation Administration]

Generated description

The Urban Mass Transportation Administration was a former U.S. federal agency responsible for funding and overseeing public transit systems in urban areas.

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

Target entity: Urban Mass Transportation Administration
Target entity description: The Urban Mass Transportation Administration was a former U.S. federal agency responsible for funding and overseeing public transit systems in urban areas.

A. Metropolitan Transit Authority
The Metropolitan Transit Authority was a former public agency that operated and managed mass transit services in the Boston metropolitan area before being succeeded by the MBTA.
B. Capital Metropolitan Transportation Authority
Capital Metropolitan Transportation Authority is the public transit agency that operates bus, rail, and paratransit services throughout the Austin, Texas region.
C. Metropolitan Transportation Authority
The Metropolitan Transportation Authority is the public agency responsible for operating and overseeing much of the mass transit and commuter rail systems in the New York City metropolitan area.
D. New York City Transit Authority
The New York City Transit Authority is the public agency responsible for operating most of New York City's subway and bus system as part of the Metropolitan Transportation Authority (MTA).
E. Brooklyn–Manhattan Transit Corporation
The Brooklyn–Manhattan Transit Corporation was a major early 20th-century New York City rapid transit company that operated subways and elevated lines in Brooklyn and Manhattan before being absorbed into the city’s unified transit system.
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_69ca83529a9c8190b5c075b4f14636ed`	completed	March 30, 2026, 2:06 p.m.
NER	Named-entity recognition	`batch_69cc491a34d08190b0795079d192a03d`	completed	March 31, 2026, 10:22 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69cecd3a3c5c8190940a61e7e7b3e887`	completed	April 2, 2026, 8:10 p.m.
NEDg	Description generation	`batch_69cece8fcbcc8190832a66287bc8f833`	completed	April 2, 2026, 8:16 p.m.
NED2	Entity disambiguation (via description)	`batch_69cecff48600819086a15700cb947056`	completed	April 2, 2026, 8:22 p.m.

Created at: March 30, 2026, 6:31 p.m.