Consider the following premises. Sarah is not climbing a mountain. Sarah is climbing a mountain or Linda is listening to a song. If Linda listens to a song, then Karen is playing squash. Can we infer the following from them? Karen is not playing squash.
 From the fact that Sarah is climbing a mountain or Linda is listening to a song, and that Sarah is not climbing a mountain we can infer that Linda is listening to a song. Finally, from the fact that if Linda listens to a song, then Karen is playing squash, and that Linda is listening to a song we can infer that Karen is playing squash, which contradicts that Karen is not playing squash. Therefore, the answer is no.