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Published online by Cambridge University Press: 12 March 2026
This paper argues that control relations are primarily characterized in terms of thematic relations. The notion Primary Location, defined on the basis of thematic structures, is shown to be crucially necessary for thematically determined cases of control. It is also shown that thematically determined control has a set of properties which are not possessed by cases of control which cannot be determined thematically, and that most of them are derived from the properties of thematic relations. Further, a locality principle of control is proposed here, based on the notion Thematic Domain; and it is shown that thematic control requires the presence of a Primary Location within this local domain.