Consider the following premises. For all x_5, x_5 will not write a letter or x_5 is fast. For all x_5, x_5 is not a musician or x_5 will work. For all x_5, x_5 is an electrician. For all x_5, x_5 is not an electrician or x_5 is a musician. Can we infer the following from them? For all x_5, x_5 is fast or x_5 will work.
 From the fact that for all x_5, x_5 is an electrician we can infer that for all x_5, x_5 is an electrician or x_5 will write a letter. From the fact that for all x_5, x_5 is an electrician or x_5 will write a letter, and that for all x_5, x_5 is not an electrician or x_5 is a musician we can infer that for all x_5, x_5 will write a letter or x_5 is a musician. From the fact that for all x_5, x_5 will write a letter or x_5 is a musician, and that for all x_5, x_5 will not write a letter or x_5 is fast we can infer that for all x_5, x_5 is a musician or x_5 is fast. Finally, from the fact that for all x_5, x_5 is a musician or x_5 is fast, and that for all x_5, x_5 is not a musician or x_5 will work we can infer that for all x_5, x_5 is fast or x_5 will work. Therefore, the answer is yes.