Triple

T8255902
Position Surface form Disambiguated ID Type / Status
Subject Eomaia E193069 entity
Predicate fossilSite P14600 FINISHED
Object Yixian Formation
The Yixian Formation is an Early Cretaceous geological formation in northeastern China renowned for its exceptionally well-preserved fossils, including early mammals, feathered dinosaurs, and primitive birds.
 E724085 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: Yixian Formation | Statement: [Eomaia, fossilSite, Yixian Formation]

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: Yixian Formation
Context triple: [Eomaia, fossilSite, Yixian Formation]
  • A. Tiaojishan Formation
    The Tiaojishan Formation is a Middle to Late Jurassic geological formation in northeastern China renowned for its exceptionally well-preserved fossils, including early mammals, dinosaurs, and other vertebrates.
  • B. Djadokhta Formation
    The Djadokhta Formation is a Late Cretaceous sedimentary rock unit in Mongolia renowned for its exceptionally well-preserved dinosaur fossils, including iconic theropods and other desert-adapted fauna.
  • C. Barun Goyot Formation
    The Barun Goyot Formation is a Late Cretaceous sedimentary rock formation in Mongolia renowned for its rich fossil beds, including remains of the dinosaur Velociraptor.
  • D. Areyonga Formation
    The Areyonga Formation is a geological rock unit within central Australia's Amadeus Basin, known for its sedimentary sequences that record Proterozoic environmental and tectonic history.
  • E. Kaiparowits Formation
    The Kaiparowits Formation is a Late Cretaceous rock unit in southern Utah renowned for its exceptionally rich and diverse dinosaur and vertebrate fossil assemblages.
  • 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: Yixian Formation
Target entity description: The Yixian Formation is an Early Cretaceous geological formation in northeastern China renowned for its exceptionally well-preserved fossils, including early mammals, feathered dinosaurs, and primitive birds.
  • A. Tiaojishan Formation
    The Tiaojishan Formation is a Middle to Late Jurassic geological formation in northeastern China renowned for its exceptionally well-preserved fossils, including early mammals, dinosaurs, and other vertebrates.
  • B. Djadokhta Formation
    The Djadokhta Formation is a Late Cretaceous sedimentary rock unit in Mongolia renowned for its exceptionally well-preserved dinosaur fossils, including iconic theropods and other desert-adapted fauna.
  • C. Barun Goyot Formation
    The Barun Goyot Formation is a Late Cretaceous sedimentary rock formation in Mongolia renowned for its rich fossil beds, including remains of the dinosaur Velociraptor.
  • D. Areyonga Formation
    The Areyonga Formation is a geological rock unit within central Australia's Amadeus Basin, known for its sedimentary sequences that record Proterozoic environmental and tectonic history.
  • E. Kaiparowits Formation
    The Kaiparowits Formation is a Late Cretaceous rock unit in southern Utah renowned for its exceptionally rich and diverse dinosaur and vertebrate fossil assemblages.
  • F. None of above. chosen

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: Yixian Formation
Triple: [Eomaia, fossilSite, Yixian Formation]
Generated description
The Yixian Formation is an Early Cretaceous geological formation in northeastern China renowned for its exceptionally well-preserved fossils, including early mammals, feathered dinosaurs, and primitive birds.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69ca82dfad9c8190b8cd18fb89f50f40 elicitation completed
NER batch_69cb78f9f680819088f1d56e0f98974f ner completed
NED1 batch_69cd681457908190b39fa034e9ca05d5 ned_source_triple completed
NED2 batch_69cd7dd65fac8190b8f44b1cf2be7bdd ned_description completed
NEDg batch_69cd6d4fa17481909f28ad7eb9bceb42 nedg completed
Created at: March 30, 2026, 5:49 p.m.