What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_16, if x_16 were a writer, then x_16 is a janitor. For all x_16, if x_16 plays tennis, then x_16 is a writer. There is at least one x_16 for which if x_16 were a janitor, then x_16 is happy. For all x_16, x_16 will not climb a mountain. For all x_16, x_16 is happy if and only if x_16 will climb a mountain.
For all x_16, if x_16 plays tennis, then x_16 is a janitor. There is at least one x_16 for which if x_16 were a writer, then x_16 is happy. For all x_16, if x_16 were happy, then x_16 is climbing a mountain. For all x_16, if x_16 climbs a mountain, then x_16 is happy. For all x_16, x_16 is not happy.