Consider the following premises. For all x_10, if x_10 were an artist, then x_10 is drinking water. For all x_10, if x_10 were a politician, then x_10 is climbing a mountain. For all x_10, x_10 is an electrician or x_10 is an artist. For all x_10, if x_10 drinks water, then x_10 is climbing a mountain. For all x_10, if x_10 were an electrician, then x_10 is drinking water. For all x_10, x_10 will take a plane. Can we infer the following from them? There is at least one x_10 for which either x_10 will take a plane or x_10 will climb a mountain are not true.
 From the fact that for all x_10, if x_10 were an electrician, then x_10 is drinking water, that for all x_10, if x_10 were an artist, then x_10 is drinking water, and that for all x_10, x_10 is an electrician or x_10 is an artist we can infer that for all x_10, x_10 will drink water. From the fact that for all x_10, x_10 will drink water we can infer that for all x_10, x_10 will drink water or x_10 is a politician. From the fact that for all x_10, if x_10 drinks water, then x_10 is climbing a mountain, that for all x_10, if x_10 were a politician, then x_10 is climbing a mountain, and that for all x_10, x_10 will drink water or x_10 is a politician we can infer that for all x_10, x_10 will climb a mountain. Finally, from the fact that for all x_10, x_10 will take a plane, and that for all x_10, x_10 will climb a mountain we can infer that for all x_10, x_10 will take a plane and x_10 will climb a mountain, which contradicts that There is at least one x_10 for which either x_10 will take a plane or x_10 will climb a mountain are not true. Therefore, the answer is no.