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