This Accessibility Ontology was designed by reusing AEGIS ontology version 1.1, and AEGIS/ACCESSIBLE ontology version 5.1. It supports inference process and provides answers to the following competency questions (CQs): CQ1) when does the user belong to a specific profile (combination of impairments)?, CQ2) what relevant assistance can be recommended to comfort the user who has a specific profile and capabilities?, CQ3) what actions the user can execute without support assistance according...