Consider the following premises. Linda is a musician or it is not cloudy. If Barbara climbs a mountain, then Charles is reading a book. If Linda were a musician, then Barbara is climbing a mountain. Can we infer the following from them? If it is cloudy, then Charles is reading a book.
 From the fact that if Linda were a musician, then Barbara is climbing a mountain, and that if Barbara climbs a mountain, then Charles is reading a book we can infer that if Linda were a musician, then Charles is reading a book. From the fact that Linda is a musician or it is not cloudy we can infer that if it is cloudy, then Linda is a musician. Finally, from the fact that if it is cloudy, then Linda is a musician, and that if Linda were a musician, then Charles is reading a book we can infer that if it is cloudy, then Charles is reading a book. Therefore, the answer is yes.