Consider the following premises. For all x_6, if x_6 were an office clerk, then x_6 is a sailor. For all x_6, if x_6 reads a book, then x_6 is an office clerk. For all x_6, x_6 will read a book or x_6 is not a sailor. Can we infer the following from them? For all x_6, if x_6 reads a book, then x_6 is a sailor.
Yes.