Translate the following inference to logic notation: For all x, if x_7 takes a plane, then x_7 is a lawyer. For all x, if x_7 were a lawyer, then x_7 is making tea. For all x, x_7 is a poet if and only if x_7 is a lawyer. For all x, x_7 is a poet or x_7 will take a plane. Therefore for all x, x_7 will make tea.
forall x: P(x) -> Q(x). forall x: Q(x) -> R(x). forall x: S(x) <-> Q(x). forall x: S(x) or P(x). Therefore forall x: R(x).