COPA

The Choice of Plausible Alternatives corpus evaluates commonsense causal reasoning by asking models to select the most plausible cause or effect for a short premise from two candidate sentences.

Overview

Domain	General
Year	2011
Sentences	2,000

Tasks & Splits

Task	Train	Test
Causality Detection	—	—
Causal Event Candidate Extraction	—	—
Causality Identification	—	—

Data Explorer

Causality Detection

Causal Event Candidate Extraction

Causality Identification

Citation

@inproceedings{roemmele:2011a,
  title      = {Choice of {{Plausible Alternatives}}: {{An Evaluation}} of {{Commonsense Causal Reasoning}}},
  shorttitle = {Choice of {{Plausible Alternatives}}},
  booktitle  = {Logical {{Formalizations}} of {{Commonsense Reasoning}}, {{Papers}} from the 2011 {{AAAI Spring Symposium}}, {{Technical Report SS-11-06}}, {{Stanford}}, {{California}}, {{USA}}, {{March}} 21-23, 2011},
  author     = {Roemmele, Melissa and Bejan, Cosmin Adrian and Gordon, Andrew S.},
  year       = 2011,
  publisher  = {AAAI},
  urldate    = {2026-06-10}
}