For the analysis, the theoretical framework of Discursive Semiotics is used, which studies the formation of meaning as a phenomenon from a model called Generative Trajectory of Meaning (GTM). From this perspective, we can understand bias as a product of semiotic processes – figurativization, thematization, and discursivization (Greimas and Courtés 2013) – involving the KOS developer social-cultural contexts (Gomes and Barros 2019a, 2019b). From this theoretical understanding, all the elements that constitute the FOAF ontology – classes and properties – are analyzed, as well as its documentation available online. We concluded that bias is an inherent feature of a KOS and that Knowledge Organization could focus on conducting studies on technologies that enable information retrieval, taking into account this aspect of its tools.