Consider the following premises. For all z, z is an astronaut or z will write a letter. If Linda were an astronaut, then it is windy. It is overcast. If Linda writes a letter, then it is windy. Can we infer the following from them? If we can, name the inference rule being used: If it is windy, then it is overcast.
We cannot infer that from the premises. Therefore the answer is no.