What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? It is cold or Barbara is sad. It is not cold or it is windy. If Barbara were sad, then Linda is a carpenter. It is windy if and only if Linda is a carpenter.
Barbara is sad or it is windy. If it is windy, then Linda is a carpenter. If Linda were a carpenter, then it is windy.