What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all z_2, z_2 is an electrician. There is at least one z_2 for which z_2 is a police officer. For all z_2, z_2 will play a game or z_2 is not an electrician.
There is at least one z_2 for which z_2 is a police officer and z_2 is an electrician. There is at least one z_2 for which z_2 is an electrician and z_2 is a police officer. For all z_2, if z_2 were an electrician, then z_2 is playing a game.