What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_8, x_8 will play squash. There is at least one x_8 for which if x_8 were happy, then x_8 is not a server. For all x_8, x_8 is a server if and only if x_8 will play squash.
For all x_8, if x_8 were a server, then x_8 is playing squash. For all x_8, if x_8 plays squash, then x_8 is a server.