Translate the following inference to logic notation: For all x, x_15 will play a game or x_15 will drive a car. For all x, if x_15 plays a game, then x_15 is an artist. For all x, if x_15 plays squash, then x_15 is an electrician. For all x, x_15 will drive a car if and only if x_15 is an artist. For all x, x_15 will play squash if and only if x_15 is an artist. Therefore for all x, x_15 is an electrician.
forall x: P(x) or Q(x). forall x: P(x) -> R(x). forall x: S(x) -> T(x). forall x: Q(x) <-> R(x). forall x: S(x) <-> R(x). Therefore forall x: T(x).