Triple

T12175985
Position Surface form Disambiguated ID Type / Status
Subject Édouard Stephan E290086 entity
Predicate usedInstrument P933 FINISHED
Object Foucault telescope at Marseille Observatory
The Foucault telescope at Marseille Observatory is a historically significant reflecting telescope designed by Léon Foucault and used in the late 19th century for pioneering astronomical observations and discoveries.
 E963089 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: Foucault telescope at Marseille Observatory | Statement: [Édouard Stephan, usedInstrument, Foucault telescope at Marseille Observatory]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Foucault telescope at Marseille Observatory
Context triple: [Édouard Stephan, usedInstrument, Foucault telescope at Marseille Observatory]
  • A. Observatory of Meudon
    The Observatory of Meudon is a major French astronomical research institution near Paris, historically renowned for its work in astrophysics and for hosting prominent scientists such as Milan Rastislav Štefánik.
  • B. Juvisy-sur-Orge observatory
    Juvisy-sur-Orge observatory is a historic French astronomical observatory, notably associated with astronomer Camille Flammarion and known for its contributions to popularizing astronomy.
  • C. Observatory of Uccle
    The Observatory of Uccle is a major Belgian astronomical and meteorological research center located in the Brussels municipality of Uccle.
  • D. Observatoire de Nice
    Observatoire de Nice is a historic astronomical observatory in Nice, France, known for its significant contributions to observational astronomy and astrophysics.
  • E. Observatoire de la Côte d’Azur
    Observatoire de la Côte d’Azur is a major French astronomical research institution on the Mediterranean coast that operates several observatories and facilities dedicated to studying the universe and Earth sciences.
  • 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: Foucault telescope at Marseille Observatory
Triple: [Édouard Stephan, usedInstrument, Foucault telescope at Marseille Observatory]
Generated description
The Foucault telescope at Marseille Observatory is a historically significant reflecting telescope designed by Léon Foucault and used in the late 19th century for pioneering astronomical observations and discoveries.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Foucault telescope at Marseille Observatory
Target entity description: The Foucault telescope at Marseille Observatory is a historically significant reflecting telescope designed by Léon Foucault and used in the late 19th century for pioneering astronomical observations and discoveries.
  • A. Observatory of Meudon
    The Observatory of Meudon is a major French astronomical research institution near Paris, historically renowned for its work in astrophysics and for hosting prominent scientists such as Milan Rastislav Štefánik.
  • B. Juvisy-sur-Orge observatory
    Juvisy-sur-Orge observatory is a historic French astronomical observatory, notably associated with astronomer Camille Flammarion and known for its contributions to popularizing astronomy.
  • C. Observatory of Uccle
    The Observatory of Uccle is a major Belgian astronomical and meteorological research center located in the Brussels municipality of Uccle.
  • D. Observatoire de Nice
    Observatoire de Nice is a historic astronomical observatory in Nice, France, known for its significant contributions to observational astronomy and astrophysics.
  • E. Observatoire de la Côte d’Azur
    Observatoire de la Côte d’Azur is a major French astronomical research institution on the Mediterranean coast that operates several observatories and facilities dedicated to studying the universe and Earth sciences.
  • 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_69d6ab4d6c00819095a9a7c35de83cfb completed April 8, 2026, 7:23 p.m.
NER Named-entity recognition batch_69d915dc71788190bdaadf7be9d8d6ce completed April 10, 2026, 3:23 p.m.
NED1 Entity disambiguation (via context triple) batch_69f5f6a9482481909500c216f23fceb4 completed May 2, 2026, 1:05 p.m.
NEDg Description generation batch_69f5fdebe3fc81909a5bb23a943c3c43 completed May 2, 2026, 1:36 p.m.
NED2 Entity disambiguation (via description) batch_69f5fef775508190ab3be470821c5a50 completed May 2, 2026, 1:41 p.m.
Created at: April 8, 2026, 9:50 p.m.