Consider the following premises. For all x_12, if x_12 goes running, then x_12 is a nurse. For all x_12, x_12 will go running or x_12 is not an electrician. There is at least one x_12 for which x_12 will not drink water or x_12 is a nurse. For all x_12, if x_12 were a nurse, then x_12 is running. For all x_12, x_12 will drink water or x_12 is an electrician. Can we infer the following from them? There is at least one x_12 for which x_12 will go running.
 From the fact that for all x_12, if x_12 were a nurse, then x_12 is running, and that for all x_12, if x_12 goes running, then x_12 is a nurse we can infer that for all x_12, x_12 is a nurse if and only if x_12 will go running. From the fact that for all x_12, x_12 will go running or x_12 is not an electrician we can infer that for all x_12, if x_12 were an electrician, then x_12 is running. From the fact that for all x_12, x_12 will drink water or x_12 is an electrician, and that there is at least one x_12 for which x_12 will not drink water or x_12 is a nurse we can infer that there is at least one x_12 for which x_12 is an electrician or x_12 is a nurse. From the fact that for all x_12, x_12 is a nurse if and only if x_12 will go running we can infer that for all x_12, if x_12 were a nurse, then x_12 is running. Finally, from the fact that for all x_12, if x_12 were an electrician, then x_12 is running, that for all x_12, if x_12 were a nurse, then x_12 is running, and that there is at least one x_12 for which x_12 is an electrician or x_12 is a nurse we can infer that there is at least one x_12 for which x_12 will go running. Therefore, the answer is yes.