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: Jennifer is driving a car. It is windy if and only if Barbara is playing tennis. It is windy if and only if Karen is taking a plane. If Jennifer drives a car, then Karen is taking a plane.
Karen is taking a plane can be inferred via the modus ponens rule. If it is windy, then Barbara is playing tennis can be inferred via the biconditional elimination rule. If it is windy, then Karen is taking a plane can be inferred via the biconditional elimination rule. If Barbara plays tennis, then it is windy can be inferred via the biconditional elimination rule. If Karen takes a plane, then it is windy can be inferred via the biconditional elimination rule.