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: p_6 -> p_1. t_1 -> ~p_1. p_1 <-> w. p_6 or w.
p_1 -> w can be inferred via the biconditional elimination rule. w -> p_1 can be inferred via the biconditional elimination rule.