Consider the following premises. Patricia is a scientist or James is a writer. It is not sunny. For all z_3, if z_3 were a scientist, then z_3 is reading a book. If it rains, then Patricia is not reading a book. If James were a writer, then Patricia is reading a book. It is sunny or David is taking a plane. Can we infer the following from them? If we can, name the inference rule being used: Patricia is a scientist or James is a writer.
That is one of the premises. Therefore, the answer is yes.