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_14 for which x_14 will drive a car or x_14 is a writer. For all x_14, if x_14 were a soldier, then x_14 is a writer. For all x_14, x_14 will not drive a car. For all x_14, if x_14 were a writer, then x_14 is a soldier.
There is at least one x_14 for which x_14 is a writer can be inferred via the existential disjunctive syllogism rule. For all x_14, x_14 is a soldier if and only if x_14 is a writer can be inferred via the universal biconditional introduction rule. For all x_14, x_14 is a writer if and only if x_14 is a soldier can be inferred via the universal biconditional introduction rule.