What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Robert is cooking or it is not cold. For all y, y is a police officer if and only if y will cook. Robert is a police officer or it is cold.
If it is cold, then Robert is cooking. For all y, if y were a police officer, then y is cooking. For all y, if y cooks, then y is a police officer.