Consider the following premises. For all x_8, x_8 will not take a plane. For all x_8, x_8 is a sailor. For all x_8, if x_8 were a sailor, then x_8 is taking a plane. For all x_8, x_8 is a writer. Can we infer the following from them? For all x_8, x_8 is a writer.
That is one of the premises. Therefore, the answer is yes.