Triple

T4971661
Position Surface form Disambiguated ID Type / Status
Subject Metrolink Antelope Valley Line E111665 entity
Predicate terminus P388 FINISHED
Object Lancaster station
Lancaster station is a commuter rail station in Lancaster, California, serving as the northern terminus of Metrolink’s Antelope Valley Line.
 E483750 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: Lancaster station | Statement: [Metrolink Antelope Valley Line, terminus, Lancaster station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Lancaster station
Context triple: [Metrolink Antelope Valley Line, terminus, Lancaster station]
  • A. Lancaster Station
    Lancaster Station is an Amtrak passenger rail station in Lancaster, Pennsylvania, serving intercity and regional trains along the Keystone Corridor.
  • B. Lancaster railway station
    Lancaster railway station is the main rail hub serving the city of Lancaster in Lancashire, England, on the West Coast Main Line.
  • C. Chester station
    Chester station is a subway station on Line 2 Bloor–Danforth of the Toronto Transit Commission, serving Toronto’s Greektown area.
  • D. Butler station
    Butler station is a small MBTA light rail stop on Boston’s historic Mattapan trolley line in the Dorchester/Mattapan area.
  • E. Windsor station
    Windsor station is a passenger rail station in Windsor, Connecticut, serving CTrail’s Hartford Line and other regional train services.
  • 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: Lancaster station
Triple: [Metrolink Antelope Valley Line, terminus, Lancaster station]
Generated description
Lancaster station is a commuter rail station in Lancaster, California, serving as the northern terminus of Metrolink’s Antelope Valley Line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Lancaster station
Target entity description: Lancaster station is a commuter rail station in Lancaster, California, serving as the northern terminus of Metrolink’s Antelope Valley Line.
  • A. Lancaster Station
    Lancaster Station is an Amtrak passenger rail station in Lancaster, Pennsylvania, serving intercity and regional trains along the Keystone Corridor.
  • B. Lancaster railway station
    Lancaster railway station is the main rail hub serving the city of Lancaster in Lancashire, England, on the West Coast Main Line.
  • C. Chester station
    Chester station is a subway station on Line 2 Bloor–Danforth of the Toronto Transit Commission, serving Toronto’s Greektown area.
  • D. Butler station
    Butler station is a small MBTA light rail stop on Boston’s historic Mattapan trolley line in the Dorchester/Mattapan area.
  • E. Windsor station
    Windsor station is a passenger rail station in Windsor, Connecticut, serving CTrail’s Hartford Line and other regional train services.
  • 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_69bd441a0eb481908050fa4273b19eae completed March 20, 2026, 12:56 p.m.
NER Named-entity recognition batch_69bd7214e18c81909db1c838a4cce78d completed March 20, 2026, 4:13 p.m.
NED1 Entity disambiguation (via context triple) batch_69be81fa9108819089a6258e3a88f0cb completed March 21, 2026, 11:33 a.m.
NEDg Description generation batch_69be8386d2fc8190a450b42dd5ac6963 completed March 21, 2026, 11:39 a.m.
NED2 Entity disambiguation (via description) batch_69be841d148881908aa53953bd2eb024 completed March 21, 2026, 11:42 a.m.
Created at: March 20, 2026, 1:33 p.m.