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: It is not windy. It is windy if and only if Susan is an artist. Mary is not drinking water. Mary is drinking water if and only if Linda is rich.
It is not windy and Mary is not drinking water can be inferred via the conjunction rule. Mary is not drinking water and it is not windy can be inferred via the conjunction rule. If it is windy, then Susan is an artist can be inferred via the biconditional elimination rule. If Mary drinks water, then Linda is rich can be inferred via the biconditional elimination rule. If Susan were an artist, then it is windy can be inferred via the biconditional elimination rule. If Linda were rich, then Mary is drinking water can be inferred via the biconditional elimination rule. Susan is not an artist can be inferred via the biconditional elimination rule. Linda is not rich can be inferred via the biconditional elimination rule.