What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all y_2, if y_2 were a police officer, then y_2 is a server. Patricia is not a server. Patricia is a police officer if and only if Patricia is a soldier.
If Patricia were a police officer, then Patricia is a soldier. If Patricia were a soldier, then Patricia is a police officer.