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: There is at least one x_6 for which if x_6 plays squash, then x_6 is climbing a mountain. For all x_6, x_6 will drive a car or x_6 will play squash. For all x_6, x_6 will climb a mountain or x_6 will not go running. For all x_6, x_6 will not drive a car or x_6 will go running.
For all x_6, x_6 will play squash or x_6 will go running can be inferred via the universal resolution rule. For all x_6, if x_6 goes running, then x_6 is climbing a mountain can be inferred via the universal rewriting rule.