What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all z_3, z_3 will cook or z_3 is not a soldier. For all z_3, z_3 is not a soldier. For all z_3, z_3 will cook if and only if z_3 is a soldier.
For all z_3, if z_3 were a soldier, then z_3 is cooking. For all z_3, if z_3 cooks, then z_3 is a soldier. For all z_3, if z_3 were a soldier, then z_3 is cooking. For all z_3, z_3 will not cook.