What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_12, x_12 will cook if and only if x_12 will play squash. There is at least one x_12 for which x_12 will not climb a mountain. For all x_12, if x_12 plays squash, then x_12 is cooking. For all x_12, x_12 will cook if and only if x_12 will climb a mountain.
For all x_12, if x_12 cooks, then x_12 is playing squash. For all x_12, if x_12 cooks, then x_12 is climbing a mountain. For all x_12, if x_12 plays squash, then x_12 is cooking. For all x_12, if x_12 climbs a mountain, then x_12 is cooking. There is at least one x_12 for which x_12 will not cook.