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: Patricia is a carpenter or Patricia is sleeping. James is playing squash or Patricia is not a carpenter. If Patricia sleeps, then James is playing squash. If Susan drinks water, then James is not playing squash.
If Patricia were a carpenter, then James is playing squash can be inferred via the rewriting rule.