Consider the following premises. For all x_9, x_9 will climb a mountain and x_9 is an electrician. For all x_9, x_9 is an astronaut. Can we infer the following from them? There is at least one z_1 for which z_1 will climb a mountain.
 From the fact that for all x_9, x_9 will climb a mountain and x_9 is an electrician we can infer that for all x_9, x_9 will climb a mountain. From the fact that for all x_9, x_9 will climb a mountain, and that for all x_9, x_9 is an astronaut we can infer that for all x_9, x_9 will climb a mountain and x_9 is an astronaut. From the fact that for all x_9, x_9 will climb a mountain and x_9 is an astronaut we can infer that for all x_9, x_9 will climb a mountain. From the fact that for all x_9, x_9 will climb a mountain we can infer that Michael is climbing a mountain. Finally, from the fact that Michael is climbing a mountain we can infer that there is at least one z_1 for which z_1 will climb a mountain. Therefore, the answer is yes.