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: t_2 -> ~q. ~s. q. s or p.
~t_2 can be inferred via the modus tollens rule. p can be inferred via the disjunctive syllogism rule. ~s and q can be inferred via the conjunction rule. q and ~s can be inferred via the conjunction rule.