What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: For all x_12, x_12 will not play squash. For all x_12, x_12 will climb a mountain if and only if x_12 will play squash. For all x_12, x_12 is a scientist or x_12 will climb a mountain. For all x_12, x_12 is not a scientist or x_12 will play tennis. For all x_12, x_12 is curious or x_12 will not play tennis.
For all x_12, x_12 will climb a mountain or x_12 will play tennis can be inferred via the universal resolution rule. For all x_12, if x_12 plays tennis, then x_12 is curious can be inferred via the universal rewriting rule. For all x_12, if x_12 climbs a mountain, then x_12 is playing squash can be inferred via the universal biconditional elimination rule. For all x_12, if x_12 plays squash, then x_12 is climbing a mountain can be inferred via the universal biconditional elimination rule. For all x_12, x_12 will not climb a mountain can be inferred via the universal biconditional elimination rule.