the semantic relation in a conditional, causal, concessive, or conditional concessive construction that expresses a relation between a condition on performing a speech act and the performance of that speech act; and the construction expressing that relation. Example: in Since you asked, ten isn't a prime number, there is a speech act causal relation between the request of the speaker whether ten is a prime number, and the performance of the speech act asserting that ten isn't a prime number. A speech act causal relation contrasts with a content causal relation and an epistemic causal relation. (Section 17.3.1)