Consider the following premises. For all x_7, x_7 will drink water if and only if x_7 is bored. For all x_7, x_7 will drink water or x_7 is a bartender. For all x_7, if x_7 were a bartender, then x_7 is sleeping. For all x_7, if x_7 were bored, then x_7 is sleeping. Can we infer the following from them? There is at least one x_7 for which x_7 will not sleep.
 From the fact that for all x_7, x_7 will drink water if and only if x_7 is bored we can infer that for all x_7, if x_7 drinks water, then x_7 is bored. From the fact that for all x_7, if x_7 drinks water, then x_7 is bored, and that for all x_7, if x_7 were bored, then x_7 is sleeping we can infer that for all x_7, if x_7 drinks water, then x_7 is sleeping. Finally, from the fact that for all x_7, if x_7 drinks water, then x_7 is sleeping, that for all x_7, if x_7 were a bartender, then x_7 is sleeping, and that for all x_7, x_7 will drink water or x_7 is a bartender we can infer that for all x_7, x_7 will sleep, which contradicts that There is at least one x_7 for which x_7 will not sleep. Therefore, the answer is no.