Triple

T20632242
Position Surface form Disambiguated ID Type / Status
Subject S8 (Munich S-Bahn) E506982 entity
Predicate rollingStock P1305 FINISHED
Object DB Class 423 — NE NERFINISHED

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: DB Class 423 | Statement: [S8 (Munich S-Bahn), rollingStock, DB Class 423]

Disambiguation candidates (1 decision)

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: DB Class 423
Context triple: [S8 (Munich S-Bahn), rollingStock, DB Class 423]
  • A. DB Class 423 chosen
    DB Class 423 is a series of electric multiple-unit commuter trains widely used in German S-Bahn networks, particularly for high-frequency urban and suburban passenger services.
  • B. DB Class 422
    DB Class 422 is a series of modern electric multiple-unit commuter trains operated by Deutsche Bahn, primarily used on S-Bahn services in Germany.
  • C. DB Class 425
    The DB Class 425 is a series of electric multiple-unit commuter trains operated by Deutsche Bahn, widely used on regional and S-Bahn services in Germany.
  • D. DB Class 430
    The DB Class 430 is a modern electric multiple unit used for suburban and S-Bahn commuter services in Germany.
  • E. DB Class 484
    DB Class 484 is a series of modern electric multiple units built for Berlin’s S-Bahn network, designed to replace older trains and improve urban commuter service.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (2 batches)

Stage Batch ID Job type Status
creating batch_69e0b4bd4a0081908d4e97a590a33fb2 elicitation completed
NER batch_69e6ad0bdcd88190a59d68e03370b271 ner completed
Created at: April 16, 2026, 11:42 a.m.