Triple

T9625854
Position Surface form Disambiguated ID Type / Status
Subject Stenian Period E232461 entity
Predicate geologicEra P1327 FINISHED
Object Mesoproterozoic Era E45387 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: Mesoproterozoic Era | Statement: [Stenian Period, geologicEra, Mesoproterozoic Era]

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: Mesoproterozoic Era
Context triple: [Stenian Period, geologicEra, Mesoproterozoic Era]
  • A. Mesoproterozoic Era chosen
    The Mesoproterozoic Era was a middle division of Earth's Proterozoic Eon characterized by the stabilization of continental cratons, widespread sedimentary basin development, and significant evolutionary advances in eukaryotic life.
  • B. Paleoproterozoic Era
    The Paleoproterozoic Era was an early division of Earth's history marked by the stabilization of continental cratons, widespread banded iron formations, and the Great Oxidation Event that significantly increased atmospheric oxygen.
  • C. Neoproterozoic Era
    The Neoproterozoic Era was the final era of the Proterozoic Eon, marked by global “Snowball Earth” glaciations and the emergence of early multicellular life leading up to the Cambrian explosion.
  • D. Proterozoic Eon
    The Proterozoic Eon is a major division of Precambrian time, spanning from about 2.5 billion to 541 million years ago, marked by the buildup of atmospheric oxygen, the emergence of complex single-celled and early multicellular life, and the assembly of large continental landmasses.
  • E. Neoarchean Era
    The Neoarchean Era was the final phase of the Archean Eon, marked by significant continental growth, stabilization of cratons, and the emergence of early oxygen-producing photosynthetic life.
  • 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_69ca848793ec8190a93a12383a754dc0 elicitation completed
NER batch_69cd9afb67c88190aa170716f0033752 ner completed
NED1 batch_69d2b58f7ea08190a96d88bafe9d4308 ned_source_triple completed
Created at: March 30, 2026, 8:10 p.m.