Consider the following premises. For all x_18, x_18 is a mechanic or x_18 is rich. For all x_18, if x_18 were rich, then x_18 is a musician. There is at least one x_18 for which if x_18 were a mechanic, then x_18 is a musician. For all x_18, x_18 will go running. Can we infer the following from them? There is at least one x_18 for which x_18 is a musician or x_18 will listen to a song.
 From the fact that there is at least one x_18 for which if x_18 were a mechanic, then x_18 is a musician, that for all x_18, if x_18 were rich, then x_18 is a musician, and that for all x_18, x_18 is a mechanic or x_18 is rich we can infer that there is at least one x_18 for which x_18 is a musician. From the fact that there is at least one x_18 for which x_18 is a musician, and that for all x_18, x_18 will go running we can infer that some musicians will go running. From the fact that some musicians will go running we can infer that there is at least one x_18 for which x_18 is a musician. Finally, from the fact that there is at least one x_18 for which x_18 is a musician we can infer that there is at least one x_18 for which x_18 is a musician or x_18 will listen to a song. Therefore, the answer is yes.