Triple

T2781281
Position Surface form Disambiguated ID Type / Status
Subject Frankfurt Hauptwache station E61699 entity
Predicate servedBy P82 FINISHED
Object U2 line
The U2 line is a rapid transit route of the Frankfurt U-Bahn network that connects central Frankfurt with several outlying districts.
E297622 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: U2 line | Statement: [Frankfurt Hauptwache station, servedBy, U2 line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: U2 line
Context triple: [Frankfurt Hauptwache station, servedBy, U2 line]
  • A. Upfield line
    The Upfield line is a suburban railway line in Melbourne, Australia, running from Flinders Street Station through the city’s northern suburbs to Upfield.
  • B. Premier Line
    Premier Line is the nickname of the London and North Western Railway, historically one of Britain’s largest and most prestigious railway companies.
  • C. Bridge Line
    Bridge Line was a former rapid transit service in the Philadelphia–Camden area that operated across the Benjamin Franklin Bridge before being replaced and expanded by the PATCO Speedline.
  • D. West Side Line
    The West Side Line is a historic freight and passenger rail line on Manhattan’s west side that once served New York’s industrial waterfront and later became partly repurposed as the High Line park.
  • E. Line 2
    Line 2 is a major east–west rapid transit route of the Shanghai Metro that connects key commercial, residential, and airport hubs across 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: U2 line
Triple: [Frankfurt Hauptwache station, servedBy, U2 line]
Generated description
The U2 line is a rapid transit route of the Frankfurt U-Bahn network that connects central Frankfurt with several outlying districts.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: U2 line
Target entity description: The U2 line is a rapid transit route of the Frankfurt U-Bahn network that connects central Frankfurt with several outlying districts.
  • A. Upfield line
    The Upfield line is a suburban railway line in Melbourne, Australia, running from Flinders Street Station through the city’s northern suburbs to Upfield.
  • B. Premier Line
    Premier Line is the nickname of the London and North Western Railway, historically one of Britain’s largest and most prestigious railway companies.
  • C. Bridge Line
    Bridge Line was a former rapid transit service in the Philadelphia–Camden area that operated across the Benjamin Franklin Bridge before being replaced and expanded by the PATCO Speedline.
  • D. West Side Line
    The West Side Line is a historic freight and passenger rail line on Manhattan’s west side that once served New York’s industrial waterfront and later became partly repurposed as the High Line park.
  • E. Line 2
    Line 2 is a major east–west rapid transit route of the Shanghai Metro that connects key commercial, residential, and airport hubs across 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_69ab4b7e43c48190997b8fc8fb1663ab completed March 6, 2026, 9:47 p.m.
NER Named-entity recognition batch_69abdd997ebc8190bff88fe549827615 completed March 7, 2026, 8:11 a.m.
NED1 Entity disambiguation (via context triple) batch_69afc05f4e7881908bf5b6f7df331041 completed March 10, 2026, 6:55 a.m.
NEDg Description generation batch_69afc1d3bec0819087bb787b7f570ddc completed March 10, 2026, 7:01 a.m.
NED2 Entity disambiguation (via description) batch_69afc229caf88190a26959c27e6a1a9e completed March 10, 2026, 7:03 a.m.
Created at: March 6, 2026, 9:57 p.m.