What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_10, if x_10 climbs a mountain, then x_10 is a server. For all x_10, if x_10 were a lawyer, then x_10 is a server. For all x_10, if x_10 were a server, then x_10 is a lawyer. For all x_10, if x_10 were happy, then x_10 is climbing a mountain. There is at least one x_10 for which x_10 is not a lawyer.
There is at least one x_10 for which x_10 is not a server. For all x_10, if x_10 climbs a mountain, then x_10 is a lawyer. For all x_10, if x_10 were happy, then x_10 is a server. For all x_10, x_10 is a lawyer if and only if x_10 is a server. For all x_10, x_10 is a server if and only if x_10 is a lawyer.