Consider the following premises. Karen is rich. Susan is listening to a song. Robert is taking a plane if and only if Susan is listening to a song. Can we infer the following from them? Robert is not taking a plane.
 From the fact that Robert is taking a plane if and only if Susan is listening to a song we can infer that if Susan listens to a song, then Robert is taking a plane. Finally, from the fact that if Susan listens to a song, then Robert is taking a plane, and that Susan is listening to a song we can infer that Robert is taking a plane, which contradicts that Robert is not taking a plane. Therefore, the answer is no.