What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one z_4 for which if z_4 were curious, then z_4 is an office clerk. For all z_4, if z_4 were an office clerk, then z_4 is happy.
There is at least one z_4 for which if z_4 were curious, then z_4 is happy.