What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_3, if x_3 were a writer, then x_3 is climbing a mountain. For all x_3, x_3 is a writer and x_3 is sad.
For all x_3, x_3 is a writer. For all x_3, x_3 is sad.