Consider the following premises. For all x_9, x_9 is not happy or x_9 will climb a mountain. For all x_9, x_9 is not a mechanic. For all x_9, x_9 is a server. For all x_9, x_9 is a mechanic or x_9 is happy. Can we infer the following from them? There is at least one x_9 for which neither x_9 is an artist nor x_9 will climb a mountain.
 From the fact that for all x_9, x_9 is a mechanic or x_9 is happy, and that for all x_9, x_9 is not a mechanic we can infer that for all x_9, x_9 is happy. From the fact that for all x_9, x_9 is happy, and that for all x_9, x_9 is a server we can infer that for all x_9, x_9 is happy and x_9 is a server. From the fact that for all x_9, x_9 is happy and x_9 is a server we can infer that for all x_9, x_9 is happy. From the fact that for all x_9, x_9 is happy we can infer that for all x_9, x_9 is happy or x_9 is an artist. Finally, from the fact that for all x_9, x_9 is happy or x_9 is an artist, and that for all x_9, x_9 is not happy or x_9 will climb a mountain we can infer that for all x_9, x_9 is an artist or x_9 will climb a mountain, which contradicts that There is at least one x_9 for which neither x_9 is an artist nor x_9 will climb a mountain. Therefore, the answer is no.