What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If Thomas makes tea, then Patricia is taking a plane. For all x_12, x_12 will take a plane if and only if x_12 is an electrician. If Patricia were an electrician, then Thomas is making tea.
If Patricia were an electrician, then Patricia is taking a plane. For all x_12, if x_12 takes a plane, then x_12 is an electrician. For all x_12, if x_12 were an electrician, then x_12 is taking a plane.