Consider the following premises. There is at least one x_6 for which x_6 is an artist. For all x_6, if x_6 were an artist, then x_6 is climbing a mountain. For all x_6, if x_6 were an office clerk, then x_6 is working. For all x_6, if x_6 climbs a mountain, then x_6 is working. Can we infer the following from them? For all x_6, x_6 will not work.
 From the fact that for all x_6, if x_6 were an artist, then x_6 is climbing a mountain, and that there is at least one x_6 for which x_6 is an artist we can infer that there is at least one x_6 for which x_6 will climb a mountain. From the fact that there is at least one x_6 for which x_6 will climb a mountain we can infer that there is at least one x_6 for which x_6 will climb a mountain or x_6 is an office clerk. Finally, from the fact that for all x_6, if x_6 climbs a mountain, then x_6 is working, that for all x_6, if x_6 were an office clerk, then x_6 is working, and that there is at least one x_6 for which x_6 will climb a mountain or x_6 is an office clerk we can infer that there is at least one x_6 for which x_6 will work, which contradicts that For all x_6, x_6 will not work. Therefore, the answer is no.