This research is a theoretical investigation of the semantic Web in light of the turns of social science. Social science has experienced several turns to have better understandings of social realities. If it is consistent with the turns, then the semantic Web is expected to have better representation of social realities than the conventional information systems. There are two major languages in the semantic Web: RDF and OWL. It is revealed that describing concepts by RDF conforms to the idea of phenomenology. Since RDF and OWL are based on the open-world assumption, the semantic Web is considered to be consistent with the linguistic turn. With the high consistency with social science, the semantic Web can be a good candidate of IS research topics. IS research is expected to contribute to the development of the semantic web, and the development of methodology in particular