Consider the following premises. For all x_7, if x_7 were a musician, then x_7 is a mechanic. For all x_7, if x_7 drives a car, then x_7 is a mechanic. For all x_7, x_7 will not read a book or x_7 is a musician. For all x_7, x_7 will work. For all x_7, x_7 will read a book or x_7 will drive a car. Can we infer the following from them? There is at least one x_7 for which x_7 will not work.
 From the fact that for all x_7, x_7 will read a book or x_7 will drive a car, and that for all x_7, x_7 will not read a book or x_7 is a musician we can infer that for all x_7, x_7 will drive a car or x_7 is a musician. From the fact that for all x_7, if x_7 drives a car, then x_7 is a mechanic, that for all x_7, if x_7 were a musician, then x_7 is a mechanic, and that for all x_7, x_7 will drive a car or x_7 is a musician we can infer that for all x_7, x_7 is a mechanic. From the fact that for all x_7, x_7 will work, and that for all x_7, x_7 is a mechanic we can infer that for all x_7, x_7 will work and x_7 is a mechanic. Finally, from the fact that for all x_7, x_7 will work and x_7 is a mechanic we can infer that for all x_7, x_7 will work, which contradicts that There is at least one x_7 for which x_7 will not work. Therefore, the answer is no.