Consider the following premises. There is at least one x_13 for which x_13 is not curious or x_13 is a police officer. For all x_13, if x_13 were a police officer, then x_13 is a politician. For all x_13, if x_13 were a nurse, then x_13 is a politician. For all x_13, x_13 is a mechanic. For all x_13, x_13 is curious. Can we infer the following from them? Some politicians are mechanics.
 From the fact that for all x_13, x_13 is curious we can infer that for all x_13, x_13 is curious or x_13 is a nurse. From the fact that for all x_13, x_13 is curious or x_13 is a nurse, and that there is at least one x_13 for which x_13 is not curious or x_13 is a police officer we can infer that there is at least one x_13 for which x_13 is a nurse or x_13 is a police officer. From the fact that for all x_13, if x_13 were a nurse, then x_13 is a politician, that for all x_13, if x_13 were a police officer, then x_13 is a politician, and that there is at least one x_13 for which x_13 is a nurse or x_13 is a police officer we can infer that there is at least one x_13 for which x_13 is a politician. Finally, from the fact that there is at least one x_13 for which x_13 is a politician, and that for all x_13, x_13 is a mechanic we can infer that some politicians are mechanics. Therefore, the answer is yes.