Triple

T18469572

Position	Surface form	Disambiguated ID	Type / Status
Subject	International–Great Northern Railroad	`E451259`	entity
Predicate	formedByMergerOf	`P77`	FINISHED
Object	Houston and Great Northern Railroad The Houston and Great Northern Railroad was a 19th-century Texas railway company that became part of the International–Great Northern Railroad through consolidation.	`E1327026`	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: Houston and Great Northern Railroad | Statement: [International–Great Northern Railroad, formedByMergerOf, Houston and Great Northern Railroad]

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

Target entity: Houston and Great Northern Railroad
Context triple: [International–Great Northern Railroad, formedByMergerOf, Houston and Great Northern Railroad]

A. Houston and Texas Central Railroad
The Houston and Texas Central Railroad was a major 19th-century Texas rail line that played a key role in opening up the state’s interior to settlement, commerce, and economic development.
B. Texas and Pacific Railway
The Texas and Pacific Railway was a major 19th- and 20th-century American railroad that operated across Texas and into the southwestern United States, playing a key role in regional transportation and economic development.
C. Fort Worth and Denver Railway
The Fort Worth and Denver Railway was a historic Texas railroad that played a key role in connecting North Texas cities with the broader regional and national rail network.
D. Texas and New Orleans Railroad
The Texas and New Orleans Railroad was a major regional rail carrier in Texas and Louisiana that became a key component of the Southern Pacific system in the American Southwest.
E. Houston Belt and Terminal Railway
The Houston Belt and Terminal Railway was a terminal railroad company in Houston, Texas, that provided switching and terminal services for multiple major railroads serving the city.
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: Houston and Great Northern Railroad
Triple: [International–Great Northern Railroad, formedByMergerOf, Houston and Great Northern Railroad]

Generated description

The Houston and Great Northern Railroad was a 19th-century Texas railway company that became part of the International–Great Northern Railroad through consolidation.

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

Target entity: Houston and Great Northern Railroad
Target entity description: The Houston and Great Northern Railroad was a 19th-century Texas railway company that became part of the International–Great Northern Railroad through consolidation.

A. Houston and Texas Central Railroad
The Houston and Texas Central Railroad was a major 19th-century Texas rail line that played a key role in opening up the state’s interior to settlement, commerce, and economic development.
B. Texas and Pacific Railway
The Texas and Pacific Railway was a major 19th- and 20th-century American railroad that operated across Texas and into the southwestern United States, playing a key role in regional transportation and economic development.
C. Fort Worth and Denver Railway
The Fort Worth and Denver Railway was a historic Texas railroad that played a key role in connecting North Texas cities with the broader regional and national rail network.
D. Texas and New Orleans Railroad
The Texas and New Orleans Railroad was a major regional rail carrier in Texas and Louisiana that became a key component of the Southern Pacific system in the American Southwest.
E. Houston Belt and Terminal Railway
The Houston Belt and Terminal Railway was a terminal railroad company in Houston, Texas, that provided switching and terminal services for multiple major railroads serving the city.
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_69d8d38465a0819099b9b42d2a662ac1`	completed	April 10, 2026, 10:40 a.m.
NER	Named-entity recognition	`batch_69e5305e349c8190925166bc3dddb320`	completed	April 19, 2026, 7:43 p.m.
NED1	Entity disambiguation (via context triple)	`batch_6a043f26ef7881908b594437995d7cbc`	completed	May 13, 2026, 9:06 a.m.
NEDg	Description generation	`batch_6a044369a6e08190b022d5a85dc8abde`	completed	May 13, 2026, 9:24 a.m.
NED2	Entity disambiguation (via description)	`batch_6a044bebd01081909b03b9dbb44f0b30`	completed	May 13, 2026, 10:01 a.m.

Created at: April 10, 2026, 11:34 a.m.