What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If it is overcast, then William is taking a plane. For all x_14, if x_14 were a bartender, then x_14 is taking a plane. For all x_14, x_14 is a bartender if and only if x_14 will make tea. For all x_14, if x_14 takes a plane, then x_14 is a bartender. For all x_14, x_14 will not make tea.
For all x_14, x_14 is a bartender if and only if x_14 will take a plane. For all x_14, x_14 will take a plane if and only if x_14 is a bartender. For all x_14, if x_14 were a bartender, then x_14 is making tea. For all x_14, if x_14 makes tea, then x_14 is a bartender. For all x_14, x_14 is not a bartender.