Translate the following inference to logic notation: For all x, if x_1 were a musician, then x_1 is an electrician. For all x, if x_1 were sad, then x_1 is an electrician. For all x, x_1 will drink water or x_1 is a musician. There is at least one x for which if x_1 drinks water, then x_1 is sad. Therefore there is at least one x for which x_1 is an electrician.
forall x: P(x) -> Q(x). forall x: R(x) -> Q(x). forall x: S(x) or P(x). exists x: S(x) -> R(x). Therefore exists x: Q(x).