Triple

T12650731
Position Surface form Disambiguated ID Type / Status
Subject Edgware branch E302149 entity
Predicate openedBy P421 FINISHED
Object London Electric Railway
The London Electric Railway was a major early 20th-century underground railway company in London that developed and operated key deep-level tube lines later incorporated into the London Underground network.
E986469 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: London Electric Railway | Statement: [Edgware branch, openedBy, London Electric Railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: London Electric Railway
Context triple: [Edgware branch, openedBy, London Electric Railway]
  • A. Underground Electric Railways Company of London
    The Underground Electric Railways Company of London was the early 20th-century holding company that developed and operated much of London's deep-level tube network, forming the core of what became the London Underground.
  • B. Central London Railway
    Central London Railway was an early deep-level underground railway in London that later became the core of the London Underground's Central line.
  • C. Metropolitan Railway
    The Metropolitan Railway was the pioneering underground railway in London and the world’s first urban underground passenger railway, forming the core of what became the London Underground.
  • D. United Railways and Electric Company
    United Railways and Electric Company was a major early 20th-century streetcar and electric transit operator in Baltimore, Maryland, that formed the backbone of the city’s public transportation system before its successor companies.
  • E. Great Northern, Piccadilly and Brompton Railway
    The Great Northern, Piccadilly and Brompton Railway was an early 20th-century deep-level London Underground railway company that formed the core of what is now the Piccadilly line.
  • 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: London Electric Railway
Triple: [Edgware branch, openedBy, London Electric Railway]
Generated description
The London Electric Railway was a major early 20th-century underground railway company in London that developed and operated key deep-level tube lines later incorporated into the London Underground network.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: London Electric Railway
Target entity description: The London Electric Railway was a major early 20th-century underground railway company in London that developed and operated key deep-level tube lines later incorporated into the London Underground network.
  • A. Underground Electric Railways Company of London chosen
    The Underground Electric Railways Company of London was the early 20th-century holding company that developed and operated much of London's deep-level tube network, forming the core of what became the London Underground.
  • B. Central London Railway
    Central London Railway was an early deep-level underground railway in London that later became the core of the London Underground's Central line.
  • C. Metropolitan Railway
    The Metropolitan Railway was the pioneering underground railway in London and the world’s first urban underground passenger railway, forming the core of what became the London Underground.
  • D. United Railways and Electric Company
    United Railways and Electric Company was a major early 20th-century streetcar and electric transit operator in Baltimore, Maryland, that formed the backbone of the city’s public transportation system before its successor companies.
  • E. Great Northern, Piccadilly and Brompton Railway
    The Great Northern, Piccadilly and Brompton Railway was an early 20th-century deep-level London Underground railway company that formed the core of what is now the Piccadilly line.
  • F. None of above.

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_69d7bdec9f9c8190b4bac675b7588211 completed April 9, 2026, 2:55 p.m.
NER Named-entity recognition batch_69d9615f28cc81908e37249d7ab5ed74 completed April 10, 2026, 8:45 p.m.
NED1 Entity disambiguation (via context triple) batch_69f6687dad6c8190bb72bfebf6636a37 completed May 2, 2026, 9:11 p.m.
NEDg Description generation batch_69f6697d8ac88190b4ead9ce47f3a705 completed May 2, 2026, 9:15 p.m.
NED2 Entity disambiguation (via description) batch_69f66a2da60881909b0a689821456bb4 completed May 2, 2026, 9:18 p.m.
Created at: April 9, 2026, 5:18 p.m.