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, if x_8 plays tennis, then x_8 is a nurse. There is at least one x_8 for which x_8 is a nurse if and only if x_8 is a server. For all x_8, if x_8 plays squash, then x_8 is playing tennis.
For all x_8, if x_8 plays squash, then x_8 is a nurse. There is at least one x_8 for which if x_8 were a nurse, then x_8 is a server. There is at least one x_8 for which if x_8 were a server, then x_8 is a nurse.