Consider the following premises. If Sarah were a scientist, then Linda is taking a plane. If Sarah sleeps, then it is cloudy. For all x_9, x_9 will sleep. If Linda takes a plane, then it is cloudy. Can we infer the following from them? It is not cloudy.
 From the fact that for all x_9, x_9 will sleep we can infer that for all x_9, x_9 will sleep or x_9 is a scientist. From the fact that for all x_9, x_9 will sleep or x_9 is a scientist we can infer that Sarah is sleeping or Sarah is a scientist. From the fact that if Sarah were a scientist, then Linda is taking a plane, and that if Linda takes a plane, then it is cloudy we can infer that if Sarah were a scientist, then it is cloudy. Finally, from the fact that if Sarah sleeps, then it is cloudy, that if Sarah were a scientist, then it is cloudy, and that Sarah is sleeping or Sarah is a scientist we can infer that it is cloudy, which contradicts that It is not cloudy. Therefore, the answer is no.