 One approach to dynamic semantics is  discourse representation theory  (DRT, Kamp 1981). (Closely related to Kamp’s approach is Irene Heim’s file change semantics (FCS, Heim 1983a) and the discourse semantics of Seuren 1985). Meanings in DRT are so-called discourse representation structures (DRSs). These structures are a type of database that contains specific pieces of information. In and of itself a DRS is a static object, but DRT can be said to be a dynamic semantic framework because it allows us to understand the process of composing meanings as a process of merging discourse representation structures. In this way, information change becomes an integral part of the interpretation process.