What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If Elisabeth makes tea, then Sarah is poor. For all x_11, x_11 is a sailor if and only if x_11 is poor. Sarah is not a sailor.
For all x_11, if x_11 were a sailor, then x_11 is poor. For all x_11, if x_11 were poor, then x_11 is a sailor.