Triple

T8848237
Position Surface form Disambiguated ID Type / Status
Subject Chaplygin crater E210563 entity
Predicate near P350 FINISHED
Object Gagarin (lunar walled plain) E40644 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: Gagarin (lunar walled plain) | Statement: [Chaplygin crater, near, Gagarin (lunar walled plain)]

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: Gagarin (lunar walled plain)
Context triple: [Chaplygin crater, near, Gagarin (lunar walled plain)]
  • A. Gagarin (walled plain)
    Gagarin (walled plain) is a large lunar impact feature on the Moon’s far side, named after Soviet cosmonaut Yuri Gagarin.
  • B. Gagarin crater on the Moon chosen
    Gagarin crater on the Moon is a large lunar impact crater on the Moon’s far side named in honor of Soviet cosmonaut Yuri Gagarin, the first human in space.
  • C. Gagarin crater system
    The Gagarin crater system is a large, complex impact structure on the Moon composed of the main Gagarin crater and its associated satellite craters.
  • D. Chaplygin crater
    Chaplygin crater is an impact crater on the Moon’s far side, notable for its heavily eroded rim and location near the large walled plain Gagarin.
  • E. von Kármán crater on the Moon
    Von Kármán crater on the Moon is a large impact crater on the lunar far side, notable as the landing site of China’s Chang’e 4 mission and named in honor of aerospace engineer Theodore von Kármán.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 batches)

Stage Batch ID Job type Status
creating batch_69ca838967bc8190b46c3c80a2887ea4 elicitation completed
NER batch_69cc60aa6db0819097c3257499200afc ner completed
NED1 batch_69cfa07ad12c81908de0502706ad4019 ned_source_triple completed
Created at: March 30, 2026, 6:49 p.m.