What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_1, x_1 is an electrician or x_1 will not sleep. There is at least one x_1 for which x_1 will sleep if and only if x_1 is an electrician.
For all x_1, if x_1 sleeps, then x_1 is an electrician. There is at least one x_1 for which if x_1 sleeps, then x_1 is an electrician. There is at least one x_1 for which if x_1 were an electrician, then x_1 is sleeping.