What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_13, if x_13 were a sailor, then x_13 is a nurse. For all x_13, x_13 is a sailor or x_13 is a lawyer. For all x_13, if x_13 were a lawyer, then x_13 is a nurse. There is at least one x_13 for which x_13 is a writer and x_13 is fast.
There is at least one x_13 for which x_13 is a writer. There is at least one x_13 for which x_13 is fast. For all x_13, x_13 is a nurse.