What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? ~t. t <-> r_3. s -> r_3. forall x: P(x) -> T(x). P(g_4).
~t and P(g_4). P(g_4) and ~t. t -> r_3. r_3 -> t. ~r_3. exists x: P(x).