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: If Sarah plays squash, then it is windy. David is a carpenter. If it is windy, then David is not a carpenter.
It is not windy can be inferred via the modus tollens rule. If Sarah plays squash, then David is not a carpenter can be inferred via the transitivity rule.