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: William is a poet or Patricia is reading a book. If William were a poet, then it is raining. It is not raining. Jennifer is an office clerk.
William is not a poet can be inferred via the modus tollens rule. It is not raining and Jennifer is an office clerk can be inferred via the conjunction rule. Jennifer is an office clerk and it is not raining can be inferred via the conjunction rule.