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 x_14 for which x_14 is a carpenter if and only if x_14 is sad. For all x_14, x_14 is not a carpenter. For all x_14, if x_14 were a server, then x_14 is sad. For all x_14, if x_14 were sad, then x_14 is a server. For all x_14, if x_14 were a server, then x_14 is sad.
For all x_14, x_14 is a server if and only if x_14 is sad. For all x_14, x_14 is sad if and only if x_14 is a server. For all x_14, x_14 is sad if and only if x_14 is a server. For all x_14, x_14 is a server if and only if x_14 is sad. There is at least one x_14 for which if x_14 were a carpenter, then x_14 is sad. There is at least one x_14 for which if x_14 were sad, then x_14 is a carpenter. There is at least one x_14 for which x_14 is not sad.