Consider the following premises. There is at least one x_13 for which x_13 is a taxi driver or x_13 will not listen to a song. For all x_13, x_13 is an office clerk if and only if x_13 will listen to a song. For all x_13, if x_13 were a lawyer, then x_13 is an office clerk. Can we infer the following from them? There is at least one x_13 for which if x_13 were a lawyer, then x_13 is a taxi driver.
 From the fact that for all x_13, x_13 is an office clerk if and only if x_13 will listen to a song we can infer that for all x_13, if x_13 were an office clerk, then x_13 is listening to a song. From the fact that there is at least one x_13 for which x_13 is a taxi driver or x_13 will not listen to a song we can infer that there is at least one x_13 for which if x_13 listens to a song, then x_13 is a taxi driver. From the fact that for all x_13, if x_13 were an office clerk, then x_13 is listening to a song, and that there is at least one x_13 for which if x_13 listens to a song, then x_13 is a taxi driver we can infer that there is at least one x_13 for which if x_13 were an office clerk, then x_13 is a taxi driver. Finally, from the fact that for all x_13, if x_13 were a lawyer, then x_13 is an office clerk, and that there is at least one x_13 for which if x_13 were an office clerk, then x_13 is a taxi driver we can infer that there is at least one x_13 for which if x_13 were a lawyer, then x_13 is a taxi driver. Therefore, the answer is yes.