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