Triple

T12147292
Position Surface form Disambiguated ID Type / Status
Subject Changzhou Metro E289357 entity
Predicate hasLine P35 FINISHED
Object Changzhou Metro Line 1
Changzhou Metro Line 1 is a rapid transit line in Changzhou, China, forming a key north–south corridor in the city's urban rail network.
 E289357 NE FINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

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: Changzhou Metro Line 1 | Statement: [Changzhou Metro, hasLine, Changzhou Metro Line 1]

Disambiguation candidates (2 decisions)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Changzhou Metro Line 1
Context triple: [Changzhou Metro, hasLine, Changzhou Metro Line 1]
  • A. Changzhou Metro
    Changzhou Metro is the urban rapid transit system serving the city of Changzhou in Jiangsu Province, China.
  • B. Nanjing Metro Line 10
    Nanjing Metro Line 10 is an urban rapid transit line in Nanjing, China, connecting key districts on the city's western side and serving as part of the Nanjing Metro network.
  • C. Nanjing Metro Line S1
    Nanjing Metro Line S1 is an airport rail link in Nanjing, China, providing rapid transit service between the city’s urban area and Nanjing Lukou International Airport.
  • D. Nanjing Metro Line 2
    Nanjing Metro Line 2 is an east–west rapid transit line in Nanjing’s metro system that connects key urban districts and major transport hubs across the city.
  • E. Nanjing Metro
    Nanjing Metro is the rapid transit system serving the city of Nanjing, China, comprising multiple urban and suburban lines that form a major part of the city's public transportation network.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Changzhou Metro Line 1
Target entity description: Changzhou Metro Line 1 is a rapid transit line in Changzhou, China, forming a key north–south corridor in the city's urban rail network.
  • A. Changzhou Metro chosen
    Changzhou Metro is the urban rapid transit system serving the city of Changzhou in Jiangsu Province, China.
  • B. Nanjing Metro Line 10
    Nanjing Metro Line 10 is an urban rapid transit line in Nanjing, China, connecting key districts on the city's western side and serving as part of the Nanjing Metro network.
  • C. Nanjing Metro Line S1
    Nanjing Metro Line S1 is an airport rail link in Nanjing, China, providing rapid transit service between the city’s urban area and Nanjing Lukou International Airport.
  • D. Nanjing Metro Line 2
    Nanjing Metro Line 2 is an east–west rapid transit line in Nanjing’s metro system that connects key urban districts and major transport hubs across the city.
  • E. Nanjing Metro
    Nanjing Metro is the rapid transit system serving the city of Nanjing, China, comprising multiple urban and suburban lines that form a major part of the city's public transportation network.
  • F. None of above.

How the object was described

The object's one-sentence description was generated by prompting gpt-5.1 with the object name and this triple as context.

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: Changzhou Metro Line 1
Triple: [Changzhou Metro, hasLine, Changzhou Metro Line 1]
Generated description
Changzhou Metro Line 1 is a rapid transit line in Changzhou, China, forming a key north–south corridor in the city's urban rail network.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69d6ab4c6710819097a9d228382dde43 elicitation completed
NER batch_69d915ac2ebc81909155f9b2fb4a2252 ner completed
NED1 batch_69f5f696ec648190aa43655ac8a2b312 ned_source_triple completed
NED2 batch_69f601e7f3b0819098a2245b9f9316b9 ned_description completed
NEDg batch_69f600b7385881909ddb86a1d39ff5d4 nedg completed
Created at: April 8, 2026, 9:49 p.m.