What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: For all x_8, if x_8 sleeps, then x_8 is an electrician. For all x_8, if x_8 were an electrician, then x_8 is sleeping. Michael is sleeping if and only if Jennifer is driving a car. Michael is not an electrician.
If Michael sleeps, then Jennifer is driving a car can be inferred via the biconditional elimination rule. If Jennifer drives a car, then Michael is sleeping can be inferred via the biconditional elimination rule. For all x_8, x_8 will sleep if and only if x_8 is an electrician can be inferred via the universal biconditional introduction rule. For all x_8, x_8 is an electrician if and only if x_8 will sleep can be inferred via the universal biconditional introduction rule.