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_7, x_7 is a soldier or x_7 will go running. For all x_7, if x_7 goes running, then x_7 is a politician. There is at least one x_7 for which if x_7 were a soldier, then x_7 is a politician.
There is at least one x_7 for which x_7 is a politician can be inferred via the existential disjunction elimination rule.