Also, a categorical compositional distributional semantic model has been developed for recognizing textual entailment and for calculating STS (Grefenstette and Sadrzadeh, 2011;Kartsaklis et al., 2014;Kartsaklis and Sadrzadeh, 2016).
these previous studies are mostly concerned with the structures of basic phrases or sentences and do not address logical and functional words such as negations and connectives.