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: Linda is working or Thomas is not playing squash. Jennifer is not a carpenter. Linda is working if and only if Jennifer is a carpenter.
If Thomas plays squash, then Linda is working can be inferred via the rewriting rule. If Linda works, then Jennifer is a carpenter can be inferred via the biconditional elimination rule. If Jennifer were a carpenter, then Linda is working can be inferred via the biconditional elimination rule. Linda is not working can be inferred via the biconditional elimination rule.