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