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: Mary is working or Sarah is not reading a book. It is not cloudy or Sarah is reading a book. It is not windy. It is cloudy or it is windy.
It is windy or Sarah is reading a book can be inferred via the resolution rule. If Sarah reads a book, then Mary is working can be inferred via the rewriting rule.