What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If it is windy, then Jessica is playing squash. For all z, z will play squash if and only if z will cook. For all z, z will not cook.
For all z, if z plays squash, then z is cooking. For all z, if z cooks, then z is playing squash. For all z, z will not play squash.