An Event Factuality Annotation Proposal for Basque

Factuality information gives evidence on whether the events in texts have happened. This information can be relevant in natural language processing tasks such as timeline generation as it helps discriminating the events that are relevant to a certain timeline. We analysed some factuality annotation schemes and proposed a new scheme that aims at concise and easy annotation. We worked on a Basque corpus for the creation of the factuality annotation scheme as an additional layer to temporal information and we evaluated our annotation decisions through an inter-annotator agreement experiment.