Translate the following inference to logic notation: For all x, if x_4 were fast, then x_4 is playing tennis. For all x, x_4 is fast or x_4 will cook. For all x, if x_4 cooks, then x_4 is playing tennis. Therefore Susan is playing tennis.
forall x: P(x) -> Q(x). forall x: P(x) or R(x). forall x: R(x) -> Q(x). Therefore Q(a).