Triple

T12216654
Position Surface form Disambiguated ID Type / Status
Subject Friedrich Georg Wilhelm von Struve E291102 entity
Predicate notableWork P4 FINISHED
Object geodetic survey of the Struve Geodetic Arc
The geodetic survey of the Struve Geodetic Arc was a 19th-century multinational triangulation project that precisely measured a meridian arc across Northern Europe to determine the size and shape of the Earth.
E970547 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: geodetic survey of the Struve Geodetic Arc | Statement: [Friedrich Georg Wilhelm von Struve, notableWork, geodetic survey of the Struve Geodetic Arc]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: geodetic survey of the Struve Geodetic Arc
Context triple: [Friedrich Georg Wilhelm von Struve, notableWork, geodetic survey of the Struve Geodetic Arc]
  • A. Cassini meridian line
    The Cassini meridian line is a monumental 17th-century astronomical sundial and meridian marker in Bologna used to measure the Sun’s position and refine the length of the year.
  • B. French Geodesic Mission to Lapland
    The French Geodesic Mission to Lapland was an 18th-century scientific expedition that measured a meridian arc near the Arctic Circle to test the Earth's shape and confirm Newton's theory of an oblate spheroid.
  • C. Humboldt meridian
    The Humboldt meridian is a principal survey meridian used as a reference line for land surveying and mapping in parts of northern California.
  • D. Curve of the Earth
    Curve of the Earth is an indie rock album by the English band Mystery Jets, noted for its atmospheric sound and introspective songwriting.
  • E. Geographia
    Geographia is an influential ancient geographical treatise by Claudius Ptolemy that systematically mapped the known world and shaped cartography for centuries.
  • 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: geodetic survey of the Struve Geodetic Arc
Triple: [Friedrich Georg Wilhelm von Struve, notableWork, geodetic survey of the Struve Geodetic Arc]
Generated description
The geodetic survey of the Struve Geodetic Arc was a 19th-century multinational triangulation project that precisely measured a meridian arc across Northern Europe to determine the size and shape of the Earth.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: geodetic survey of the Struve Geodetic Arc
Target entity description: The geodetic survey of the Struve Geodetic Arc was a 19th-century multinational triangulation project that precisely measured a meridian arc across Northern Europe to determine the size and shape of the Earth.
  • A. Cassini meridian line
    The Cassini meridian line is a monumental 17th-century astronomical sundial and meridian marker in Bologna used to measure the Sun’s position and refine the length of the year.
  • B. French Geodesic Mission to Lapland
    The French Geodesic Mission to Lapland was an 18th-century scientific expedition that measured a meridian arc near the Arctic Circle to test the Earth's shape and confirm Newton's theory of an oblate spheroid.
  • C. Humboldt meridian
    The Humboldt meridian is a principal survey meridian used as a reference line for land surveying and mapping in parts of northern California.
  • D. Curve of the Earth
    Curve of the Earth is an indie rock album by the English band Mystery Jets, noted for its atmospheric sound and introspective songwriting.
  • E. Geographia
    Geographia is an influential ancient geographical treatise by Claudius Ptolemy that systematically mapped the known world and shaped cartography for centuries.
  • 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_69d6ab65923081909acfc61b7a612233 completed April 8, 2026, 7:24 p.m.
NER Named-entity recognition batch_69d91c9419d48190b0037fe8edc681c4 completed April 10, 2026, 3:51 p.m.
NED1 Entity disambiguation (via context triple) batch_69f60aa31f548190bd4f8cfe3c55614b completed May 2, 2026, 2:30 p.m.
NEDg Description generation batch_69f60dbe4f788190a3b4be4b31cfbffa completed May 2, 2026, 2:44 p.m.
NED2 Entity disambiguation (via description) batch_69f60ee037bc8190be486e30e03031a7 completed May 2, 2026, 2:49 p.m.
Created at: April 8, 2026, 9:51 p.m.