Triple

T16309148

Position	Surface form	Disambiguated ID	Type / Status
Subject	Capital Crescent Trail	`E396001`	entity
Predicate	follows	`P134`	FINISHED
Object	former Georgetown Branch of the Baltimore and Ohio Railroad The former Georgetown Branch of the Baltimore and Ohio Railroad was a freight rail line in the Washington, D.C. area that once connected the main B&O network to Georgetown along the Potomac River.	`E1205116`	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: former Georgetown Branch of the Baltimore and Ohio Railroad | Statement: [Capital Crescent Trail, follows, former Georgetown Branch of the Baltimore and Ohio Railroad]

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

Target entity: former Georgetown Branch of the Baltimore and Ohio Railroad
Context triple: [Capital Crescent Trail, follows, former Georgetown Branch of the Baltimore and Ohio Railroad]

A. Buckingham Branch Railroad
The Buckingham Branch Railroad is a Virginia-based shortline freight railroad that also hosts passenger service, notably providing trackage for Amtrak’s Cardinal route through the state.
B. Baltimore rail network
The Baltimore rail network is the interconnected system of freight and passenger rail lines serving the Baltimore, Maryland metropolitan area, linking the city to regional and national rail corridors.
C. Baltimore Industrial Railroad
The Baltimore Industrial Railroad is a shortline freight railroad that serves industrial customers within the Baltimore, Maryland area.
D. CSX Baltimore Terminal Subdivision
The CSX Baltimore Terminal Subdivision is a key freight rail line in Baltimore, Maryland, serving as a major CSX Transportation corridor for moving goods through the city’s rail network.
E. Maryland Midland Railway
Maryland Midland Railway is a regional short-line freight railroad operating in central Maryland and southern Pennsylvania, connecting local industries to the broader North American rail network.
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: former Georgetown Branch of the Baltimore and Ohio Railroad
Triple: [Capital Crescent Trail, follows, former Georgetown Branch of the Baltimore and Ohio Railroad]

Generated description

The former Georgetown Branch of the Baltimore and Ohio Railroad was a freight rail line in the Washington, D.C. area that once connected the main B&O network to Georgetown along the Potomac River.

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

Target entity: former Georgetown Branch of the Baltimore and Ohio Railroad
Target entity description: The former Georgetown Branch of the Baltimore and Ohio Railroad was a freight rail line in the Washington, D.C. area that once connected the main B&O network to Georgetown along the Potomac River.

A. Buckingham Branch Railroad
The Buckingham Branch Railroad is a Virginia-based shortline freight railroad that also hosts passenger service, notably providing trackage for Amtrak’s Cardinal route through the state.
B. Baltimore rail network
The Baltimore rail network is the interconnected system of freight and passenger rail lines serving the Baltimore, Maryland metropolitan area, linking the city to regional and national rail corridors.
C. Baltimore Industrial Railroad
The Baltimore Industrial Railroad is a shortline freight railroad that serves industrial customers within the Baltimore, Maryland area.
D. CSX Baltimore Terminal Subdivision
The CSX Baltimore Terminal Subdivision is a key freight rail line in Baltimore, Maryland, serving as a major CSX Transportation corridor for moving goods through the city’s rail network.
E. Maryland Midland Railway
Maryland Midland Railway is a regional short-line freight railroad operating in central Maryland and southern Pennsylvania, connecting local industries to the broader North American rail network.
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_69d87f23bb088190a16fbb91a1957ea5`	completed	April 10, 2026, 4:40 a.m.
NER	Named-entity recognition	`batch_69e288d9557c81909203cd47aebf0f44`	completed	April 17, 2026, 7:24 p.m.
NED1	Entity disambiguation (via context triple)	`batch_6a001fa517908190a29caa0156b1d1cd`	completed	May 10, 2026, 6:03 a.m.
NEDg	Description generation	`batch_6a00204bc3dc8190af075707f8989e3a`	completed	May 10, 2026, 6:06 a.m.
NED2	Entity disambiguation (via description)	`batch_6a00215cc7a48190a5c4219d15749aa2`	completed	May 10, 2026, 6:10 a.m.

Created at: April 10, 2026, 5:06 a.m.