 In intensional contexts, intentional objects have been posited also as semantic values of anaphora, both within the context of an attitude of a single agent and across attitudinal contexts involving different agents (Edelberg 1986). In those contexts, intentional objects serve as discourse referents (Karttunen 1976) and thus interact with dynamic semantics, being individuated not just by what properties agents attribute to them, but also by the flow of information in the discourse (Edelberg 1986). Discourse referents in fact have sometimes been conceived ontologically even in extensional contexts (Landman 1986), though this is not the dominant view in dynamic semantics (see entry on  dynamic semantics).