Consider the following premises. There is at least one x_8 for which if x_8 listens to a song, then x_8 is an artist. For all x_8, if x_8 were an artist, then x_8 is not a mechanic. For all x_8, if x_8 were an artist, then x_8 is a nurse. For all x_8, if x_8 were a nurse, then x_8 is listening to a song. For all x_8, x_8 is a mechanic. Can we infer the following from them? For all x_8, x_8 is a nurse.
 From the fact that for all x_8, if x_8 were a nurse, then x_8 is listening to a song, and that there is at least one x_8 for which if x_8 listens to a song, then x_8 is an artist we can infer that there is at least one x_8 for which if x_8 were a nurse, then x_8 is an artist. From the fact that for all x_8, if x_8 were an artist, then x_8 is not a mechanic, and that for all x_8, x_8 is a mechanic we can infer that for all x_8, x_8 is not an artist. From the fact that there is at least one x_8 for which if x_8 were a nurse, then x_8 is an artist, and that for all x_8, if x_8 were an artist, then x_8 is a nurse we can infer that there is at least one x_8 for which x_8 is a nurse if and only if x_8 is an artist. Finally, from the fact that there is at least one x_8 for which x_8 is a nurse if and only if x_8 is an artist, and that for all x_8, x_8 is not an artist we can infer that there is at least one x_8 for which x_8 is not a nurse, which contradicts that For all x_8, x_8 is a nurse. Therefore, the answer is no.