Semantic annotation of textual entailment

Assaf Toledo, Stavroula Alexandropoulou, Sophia Katrenko, Heidi Klockmann, Wen Kokke, Yoad Winter

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract / Description of output

We introduce a new formal semantic model for annotating textual entailments, that describes restrictive, intersective and appositive modification. The model contains a formally defined interpreted lexicon, which specifies the inventory of symbols and the supported semantic operators, and an informally defined annotation scheme that instructs annotators in which way to bind words and constructions from a given pair of premise and hypothesis to the interpreted lexicon. We explore the applicability of the proposed model to the Recognizing Textual Entailment (RTE) 1-4 corpora and describe a first-stage annotation scheme based on which manual annotation work was carried out. The constructions we annotated were found to occur in 80.65% of the entailments in RTE 1-4 and were annotated with cross-annotator agreement of 68% on average. The annotated RTE corpora are publicly available for the research community.

Original languageEnglish
Title of host publicationProceedings of the 10th International Conference on Computational Semantics (IWCS 2013) – Long Papers
EditorsAlexander Koller, Katrin Erk
Number of pages11
Publication statusPublished - 4 Apr 2013
Externally publishedYes
Event10th International Conference on Computational Semantics - University of Postdam, Potsdam, Germany
Duration: 19 Mar 201322 Mar 2013


Conference10th International Conference on Computational Semantics
Abbreviated titleIWCS 2013
Internet address


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