What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_14, x_14 is not an electrician. For all x_14, x_14 is a police officer or x_14 is not a cashier. For all x_14, if x_14 were happy, then x_14 is a cashier. There is at least one x_14 for which if x_14 were a police officer, then x_14 is happy. For all x_14, x_14 is a police officer if and only if x_14 is an electrician.
There is at least one x_14 for which if x_14 were a police officer, then x_14 is a cashier. For all x_14, if x_14 were a cashier, then x_14 is a police officer. For all x_14, if x_14 were a police officer, then x_14 is an electrician. For all x_14, if x_14 were an electrician, then x_14 is a police officer. For all x_14, x_14 is not a police officer.