Consider the following premises. For all x_7, x_7 will not read a book or x_7 will make tea. For all x_7, x_7 will read a book or x_7 is a soldier. For all x_7, if x_7 were a soldier, then x_7 is a sailor. There is at least one x_7 for which if x_7 makes tea, then x_7 is writing a letter. For all x_7, if x_7 writes a letter, then x_7 is a sailor. Can we infer the following from them? For all x_7, x_7 is not a sailor.
 From the fact that for all x_7, x_7 will read a book or x_7 is a soldier, and that for all x_7, x_7 will not read a book or x_7 will make tea we can infer that for all x_7, x_7 is a soldier or x_7 will make tea. From the fact that there is at least one x_7 for which if x_7 makes tea, then x_7 is writing a letter, and that for all x_7, if x_7 writes a letter, then x_7 is a sailor we can infer that there is at least one x_7 for which if x_7 makes tea, then x_7 is a sailor. Finally, from the fact that for all x_7, if x_7 were a soldier, then x_7 is a sailor, that there is at least one x_7 for which if x_7 makes tea, then x_7 is a sailor, and that for all x_7, x_7 is a soldier or x_7 will make tea we can infer that there is at least one x_7 for which x_7 is a sailor, which contradicts that For all x_7, x_7 is not a sailor. Therefore, the answer is no.