Consider the following premises. For all x_16, if x_16 were an electrician, then x_16 is a doctor. There is at least one x_16 for which x_16 will play squash or x_16 will go running. For all x_16, x_16 is not a doctor. For all x_16, if x_16 goes running, then x_16 is an electrician. For all x_16, if x_16 plays squash, then x_16 is an electrician. Can we infer the following from them? There is at least one x_16 for which x_16 is an astronaut.
 From the fact that for all x_16, if x_16 plays squash, then x_16 is an electrician, that for all x_16, if x_16 goes running, then x_16 is an electrician, and that there is at least one x_16 for which x_16 will play squash or x_16 will go running we can infer that there is at least one x_16 for which x_16 is an electrician. From the fact that there is at least one x_16 for which x_16 is an electrician we can infer that there is at least one x_16 for which x_16 is an electrician or x_16 is an astronaut. From the fact that for all x_16, if x_16 were an electrician, then x_16 is a doctor, and that for all x_16, x_16 is not a doctor we can infer that for all x_16, x_16 is not an electrician. Finally, from the fact that there is at least one x_16 for which x_16 is an electrician or x_16 is an astronaut, and that for all x_16, x_16 is not an electrician we can infer that there is at least one x_16 for which x_16 is an astronaut. Therefore, the answer is yes. Notice, however, that the premises were contradictory, so we can infer anything from them.