What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one x_3 for which x_3 is a poet or x_3 will not take a plane. For all x_3, x_3 is a poet if and only if x_3 will take a plane.
There is at least one x_3 for which if x_3 takes a plane, then x_3 is a poet. For all x_3, if x_3 were a poet, then x_3 is taking a plane. For all x_3, if x_3 takes a plane, then x_3 is a poet.