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: forall x_14: P_8(x_14) or Q_14(x_14). forall x_14: P_8(x_14) -> T_4(x_14). exists x_14: T_4(x_14) <-> Q_14(x_14). forall x_14: T_4(x_14) -> Q(x_14).
forall x_14: P_8(x_14) -> Q(x_14) can be inferred via the universal transitivity rule. exists x_14: T_4(x_14) -> Q_14(x_14) can be inferred via the existential biconditional elimination rule. exists x_14: Q_14(x_14) -> T_4(x_14) can be inferred via the existential biconditional elimination rule.