Consider the following premises. For all x_5, x_5 is not a mechanic or x_5 will write a letter. For all x_5, x_5 is a mechanic or x_5 will read a book. For all x_5, x_5 will not write a letter. There is at least one x_5 for which x_5 will not read a book or x_5 will drink water. Can we infer the following from them? For all x_5, x_5 will not drink water.
 From the fact that for all x_5, x_5 is a mechanic or x_5 will read a book, and that for all x_5, x_5 is not a mechanic or x_5 will write a letter we can infer that for all x_5, x_5 will read a book or x_5 will write a letter. From the fact that for all x_5, x_5 will read a book or x_5 will write a letter, and that there is at least one x_5 for which x_5 will not read a book or x_5 will drink water we can infer that there is at least one x_5 for which x_5 will write a letter or x_5 will drink water. Finally, from the fact that there is at least one x_5 for which x_5 will write a letter or x_5 will drink water, and that for all x_5, x_5 will not write a letter we can infer that there is at least one x_5 for which x_5 will drink water, which contradicts that For all x_5, x_5 will not drink water. Therefore, the answer is no.