Triple

T3502431
Position Surface form Disambiguated ID Type / Status
Subject Hell Creek Formation E73998 entity
Predicate contains P35 FINISHED
Object Cretaceous–Paleogene boundary layer E6899 NE FINISHED

How this triple was built (2 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: Cretaceous–Paleogene boundary layer | Statement: [Hell Creek Formation, contains, Cretaceous–Paleogene boundary layer]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Cretaceous–Paleogene boundary layer
Context triple: [Hell Creek Formation, contains, Cretaceous–Paleogene boundary layer]
  • A. Cretaceous–Paleogene boundary chosen
    The Cretaceous–Paleogene boundary marks the geological transition 66 million years ago associated with a mass extinction event that wiped out non-avian dinosaurs and many other species, likely triggered by a large asteroid impact.
  • B. Chicxulub impact crater
    The Chicxulub impact crater is a massive buried structure in Mexico’s Yucatán Peninsula formed by an asteroid impact widely linked to the mass extinction event that wiped out the non-avian dinosaurs.
  • C. Solnhofen Limestone
    Solnhofen Limestone is a famous Late Jurassic lithographic limestone formation in Bavaria, Germany, renowned for its exceptionally well-preserved fossils, including the iconic Archaeopteryx.
  • D. Morrison Formation
    The Morrison Formation is a vast Late Jurassic sedimentary rock formation in the western United States renowned for its exceptionally rich assemblage of dinosaur fossils, including iconic sauropods and theropods.
  • E. Hell Creek Formation
    The Hell Creek Formation is a famous Late Cretaceous rock unit in North America renowned for its exceptionally rich dinosaur fossils, including iconic specimens like Tyrannosaurus rex and Triceratops.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 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_69ad85ce7a9c81909ddc5cf0cb67a6e3 completed March 8, 2026, 2:21 p.m.
NER Named-entity recognition batch_69adbbef47988190b5b3fe2e452b9ac8 completed March 8, 2026, 6:11 p.m.
NED1 Entity disambiguation (via context triple) batch_69b373d88dc08190a8508f990b01cf03 completed March 13, 2026, 2:18 a.m.
Created at: March 8, 2026, 3:18 p.m.