Translate the following inference to logic notation: For all x, x_4 is happy or x_4 is a sailor. For all x, x_4 is not happy. For all x, x_4 is not a sailor or x_4 is a carpenter. Therefore for all x, x_4 will play tennis or x_4 is a carpenter.
forall x: P(x) or Q(x). forall x: ~P(x). forall x: ~Q(x) or R(x). Therefore forall x: S(x) or R(x).