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_6, if x_6 goes running, then x_6 is an astronaut. Sarah is running or James is excited. For all x_6, x_6 is not an astronaut.
For all x_6, x_6 will not go running can be inferred via the universal modus tollens rule.