Triple

T2063903
Position Surface form Disambiguated ID Type / Status
Subject San Mateo E45852 entity
Predicate hasRailStation P726 FINISHED
Object Hayward Park station
Hayward Park station is a Caltrain commuter rail station serving the city of San Mateo, California.
 E230862 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: Hayward Park station | Statement: [San Mateo, hasRailStation, Hayward Park station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Hayward Park station
Context triple: [San Mateo, hasRailStation, Hayward Park station]
  • A. Wembley Park station
    Wembley Park station is a London Underground station in north-west London that serves as a key access point for visitors to Wembley Stadium and the surrounding Wembley Park area.
  • B. Tower Hill station
    Tower Hill station is a London Underground station in central London serving the Circle and District lines near the Tower of London.
  • C. Tottenham Hale station
    Tottenham Hale station is a major transport hub in North London, served by both National Rail and London Underground services, providing key connections between central London, Stansted Airport, and surrounding areas.
  • D. Queen's Park station
    Queen's Park station is a Toronto subway station on Line 1 located near the Ontario Legislative Building and major institutions in the city's downtown.
  • E. Northumberland Park station
    Northumberland Park station is a railway station in North London that serves the Tottenham area and provides convenient access for fans traveling to Tottenham Hotspur Stadium.
  • 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: Hayward Park station
Triple: [San Mateo, hasRailStation, Hayward Park station]
Generated description
Hayward Park station is a Caltrain commuter rail station serving the city of San Mateo, California.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Hayward Park station
Target entity description: Hayward Park station is a Caltrain commuter rail station serving the city of San Mateo, California.
  • A. Wembley Park station
    Wembley Park station is a London Underground station in north-west London that serves as a key access point for visitors to Wembley Stadium and the surrounding Wembley Park area.
  • B. Tower Hill station
    Tower Hill station is a London Underground station in central London serving the Circle and District lines near the Tower of London.
  • C. Tottenham Hale station
    Tottenham Hale station is a major transport hub in North London, served by both National Rail and London Underground services, providing key connections between central London, Stansted Airport, and surrounding areas.
  • D. Queen's Park station
    Queen's Park station is a Toronto subway station on Line 1 located near the Ontario Legislative Building and major institutions in the city's downtown.
  • E. Northumberland Park station
    Northumberland Park station is a railway station in North London that serves the Tottenham area and provides convenient access for fans traveling to Tottenham Hotspur Stadium.
  • 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_69a8891b38288190abd572ccad9b6928 completed March 4, 2026, 7:33 p.m.
NER Named-entity recognition batch_69abb9d3a92081909416c1d087876e99 completed March 7, 2026, 5:38 a.m.
NED1 Entity disambiguation (via context triple) batch_69ae271fa66081908be6c685b9bd8aa4 completed March 9, 2026, 1:49 a.m.
NEDg Description generation batch_69ae28b4f0548190926ac694fbade405 completed March 9, 2026, 1:56 a.m.
NED2 Entity disambiguation (via description) batch_69ae292a9d7481909acbc3a5f24ff0b9 completed March 9, 2026, 1:58 a.m.
Created at: March 4, 2026, 7:40 p.m.