What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If it is overcast, then Karen is a bartender. For all y, if y plays tennis, then y is a bartender. Karen is playing tennis or it is overcast. For all y, if y were a bartender, then y is playing tennis.
For all y, y will play tennis if and only if y is a bartender. For all y, y is a bartender if and only if y will play tennis.