Triple

T143457
Position Surface form Disambiguated ID Type / Status
Subject SEPTA Regional Rail E2901 entity
Predicate usesInfrastructure P6820 FINISHED
Object Center City Commuter Connection
The Center City Commuter Connection is an underground rail tunnel in downtown Philadelphia that links formerly separate commuter rail lines into a unified through-running system.
E30169 NE FINISHED

How this triple was built (5 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: Center City Commuter Connection | Statement: [SEPTA Regional Rail, usesInfrastructure, Center City Commuter Connection]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Center City Commuter Connection
Context triple: [SEPTA Regional Rail, usesInfrastructure, Center City Commuter Connection]
  • A. Penn Line
    The Penn Line is a MARC commuter rail service in Maryland that runs along the busy Northeast Corridor between Washington, D.C., and Perryville, serving major intermediate stops such as Baltimore.
  • B. Shore Line East
    Shore Line East is a commuter rail service in southern Connecticut that provides passenger trains along the Northeast Corridor between New Haven and shoreline communities.
  • C. Jerome Avenue Line
    The Jerome Avenue Line is a New York City Subway route in the Bronx, primarily served by the 4 train and running along Jerome Avenue from the Yankee Stadium area toward the northern end of the borough.
  • D. White Plains Road Line
    The White Plains Road Line is a major New York City Subway route in the Bronx, primarily served by the 2 and 5 trains and running along White Plains Road.
  • E. Lenox Avenue Line
    The Lenox Avenue Line is a major New York City Subway route in Harlem, Manhattan, primarily served by IRT trains running beneath Lenox Avenue.
  • 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: Center City Commuter Connection
Triple: [SEPTA Regional Rail, usesInfrastructure, Center City Commuter Connection]
Generated description
The Center City Commuter Connection is an underground rail tunnel in downtown Philadelphia that links formerly separate commuter rail lines into a unified through-running system.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Center City Commuter Connection
Target entity description: The Center City Commuter Connection is an underground rail tunnel in downtown Philadelphia that links formerly separate commuter rail lines into a unified through-running system.
  • A. Penn Line
    The Penn Line is a MARC commuter rail service in Maryland that runs along the busy Northeast Corridor between Washington, D.C., and Perryville, serving major intermediate stops such as Baltimore.
  • B. Shore Line East
    Shore Line East is a commuter rail service in southern Connecticut that provides passenger trains along the Northeast Corridor between New Haven and shoreline communities.
  • C. Jerome Avenue Line
    The Jerome Avenue Line is a New York City Subway route in the Bronx, primarily served by the 4 train and running along Jerome Avenue from the Yankee Stadium area toward the northern end of the borough.
  • D. White Plains Road Line
    The White Plains Road Line is a major New York City Subway route in the Bronx, primarily served by the 2 and 5 trains and running along White Plains Road.
  • E. Lenox Avenue Line
    The Lenox Avenue Line is a major New York City Subway route in Harlem, Manhattan, primarily served by IRT trains running beneath Lenox Avenue.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: usesInfrastructure
Context triple: [SEPTA Regional Rail, usesInfrastructure, Center City Commuter Connection]
  • A. hasInfrastructureType
    Indicates that an entity possesses or is associated with a specific category or type of infrastructure.
  • B. usedOn
    Indicates that one entity is applied to, operated on, or otherwise utilized in relation to another entity.
  • C. usesEquipment
    Indicates that an entity employs or operates a particular piece of equipment to perform an action or fulfill a function.
  • D. usedWith
    Indicates that one entity is typically or appropriately employed together with another entity in a combined or complementary use.
  • E. usesBuilding
    Indicates that one entity makes use of, occupies, or operates within a particular building.
  • F. None of above. chosen

Provenance (7 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_69a2521e35c08190b28e5c9f1e3c9b59 completed Feb. 28, 2026, 2:25 a.m.
NER Named-entity recognition batch_69a2580ca15481909fa3e87d804a1b23 completed Feb. 28, 2026, 2:50 a.m.
NED1 Entity disambiguation (via context triple) batch_69a36473a3d88190b20052b2c0d272a2 completed Feb. 28, 2026, 9:56 p.m.
NEDg Description generation batch_69a365272a248190866d714fc51b5cba completed Feb. 28, 2026, 9:59 p.m.
NED2 Entity disambiguation (via description) batch_69a3658e27bc8190a97ede95a99bc187 completed Feb. 28, 2026, 10 p.m.
PD Predicate disambiguation batch_69a2565559ac81909e0c4e095a7dfa27 completed Feb. 28, 2026, 2:43 a.m.
PDg Predicate description generation batch_69a2580b00988190868ee24c0289cf70 completed Feb. 28, 2026, 2:50 a.m.
Created at: Feb. 28, 2026, 2:31 a.m.