Triple

T159606

Position	Surface form	Disambiguated ID	Type / Status
Subject	Baltimore Light RailLink	`E3252`	entity
Predicate	operator	`P179`	FINISHED
Object	Maryland Transit Administration The Maryland Transit Administration is the state agency responsible for operating and overseeing public transportation services in Maryland, including bus, rail, and commuter transit systems.	`E20363`	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: Maryland Transit Administration | Statement: [Baltimore Light RailLink, operator, Maryland Transit Administration]

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

Target entity: Maryland Transit Administration
Context triple: [Baltimore Light RailLink, operator, Maryland Transit Administration]

A. Washington Metropolitan Area Transit Authority
The Washington Metropolitan Area Transit Authority is the agency that manages public transportation services, including Metrorail and Metrobus, in the Washington, D.C. metropolitan region.
B. Maryland Department of Transportation
The Maryland Department of Transportation is the statewide agency responsible for planning, building, operating, and maintaining Maryland’s transportation systems, including highways, transit, ports, aviation, and rail services.
C. Metropolitan Atlanta Rapid Transit Authority (MARTA)
The Metropolitan Atlanta Rapid Transit Authority (MARTA) is the primary public transportation agency serving the Atlanta metropolitan area, operating a network of heavy rail, bus, and paratransit services.
D. Potomac and Rappahannock Transportation Commission
The Potomac and Rappahannock Transportation Commission is a regional transit agency in Northern Virginia that oversees and funds commuter rail and bus services for member jurisdictions south of Washington, D.C.
E. Tompkins Consolidated Area Transit
Tompkins Consolidated Area Transit is the primary public bus system serving Ithaca and the surrounding Tompkins County region in New York.
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: Maryland Transit Administration
Triple: [Baltimore Light RailLink, operator, Maryland Transit Administration]

Generated description

The Maryland Transit Administration is the state agency responsible for operating and overseeing public transportation services in Maryland, including bus, rail, and commuter transit systems.

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

Target entity: Maryland Transit Administration
Target entity description: The Maryland Transit Administration is the state agency responsible for operating and overseeing public transportation services in Maryland, including bus, rail, and commuter transit systems.

A. Washington Metropolitan Area Transit Authority
The Washington Metropolitan Area Transit Authority is the agency that manages public transportation services, including Metrorail and Metrobus, in the Washington, D.C. metropolitan region.
B. Maryland Department of Transportation
The Maryland Department of Transportation is the statewide agency responsible for planning, building, operating, and maintaining Maryland’s transportation systems, including highways, transit, ports, aviation, and rail services.
C. Metropolitan Atlanta Rapid Transit Authority (MARTA)
The Metropolitan Atlanta Rapid Transit Authority (MARTA) is the primary public transportation agency serving the Atlanta metropolitan area, operating a network of heavy rail, bus, and paratransit services.
D. Potomac and Rappahannock Transportation Commission
The Potomac and Rappahannock Transportation Commission is a regional transit agency in Northern Virginia that oversees and funds commuter rail and bus services for member jurisdictions south of Washington, D.C.
E. Tompkins Consolidated Area Transit
Tompkins Consolidated Area Transit is the primary public bus system serving Ithaca and the surrounding Tompkins County region in New York.
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_69a2527757ec819090b8becb2cf1a862`	completed	Feb. 28, 2026, 2:27 a.m.
NER	Named-entity recognition	`batch_69a25855baf48190a1b63f2e5865d957`	completed	Feb. 28, 2026, 2:52 a.m.
NED1	Entity disambiguation (via context triple)	`batch_69a2db53aaf081909577b743e3660e5c`	completed	Feb. 28, 2026, 12:10 p.m.
NEDg	Description generation	`batch_69a2dbc0d1a881908d47bb4ebe2e3a26`	completed	Feb. 28, 2026, 12:12 p.m.
NED2	Entity disambiguation (via description)	`batch_69a2dc307978819091019dff30f84e57`	completed	Feb. 28, 2026, 12:14 p.m.

Created at: Feb. 28, 2026, 2:31 a.m.