Consider the following premises. For all x_11, if x_11 drinks water, then x_11 is running. For all x_11, x_11 is not bored. For all x_11, if x_11 were a janitor, then x_11 is a musician. For all x_11, x_11 is bored if and only if x_11 will go running. For all x_11, if x_11 were a musician, then x_11 is drinking water. Can we infer the following from them? For all x_11, x_11 is not a janitor.
 From the fact that for all x_11, x_11 is bored if and only if x_11 will go running, and that for all x_11, x_11 is not bored we can infer that for all x_11, x_11 will not go running. From the fact that for all x_11, if x_11 drinks water, then x_11 is running, and that for all x_11, x_11 will not go running we can infer that for all x_11, x_11 will not drink water. From the fact that for all x_11, if x_11 were a musician, then x_11 is drinking water, and that for all x_11, x_11 will not drink water we can infer that for all x_11, x_11 is not a musician. Finally, from the fact that for all x_11, if x_11 were a janitor, then x_11 is a musician, and that for all x_11, x_11 is not a musician we can infer that for all x_11, x_11 is not a janitor. Therefore, the answer is yes.