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: Barbara is cooking if and only if it is windy. Barbara is cooking or Linda is happy. For all x_17, x_17 is bored or x_17 is not happy. If Linda were bored, then it is windy.
If Linda plays a game, then Barbara is cooking can be inferred via the rewriting rule. If Barbara cooks, then it is windy can be inferred via the biconditional elimination rule. If it is windy, then Barbara is cooking can be inferred via the biconditional elimination rule. For all x_17, if x_17 were happy, then x_17 is bored can be inferred via the universal rewriting rule.