Consider the following premises. For all x_6, x_6 will not play tennis or x_6 is a cashier. For all x_6, x_6 will play tennis or x_6 is an office clerk. For all x_6, if x_6 were an office clerk, then x_6 is not an artist. For all x_6, x_6 is an artist. Can we infer the following from them? For all x_6, x_6 is a cashier.
 From the fact that for all x_6, x_6 will play tennis or x_6 is an office clerk, and that for all x_6, x_6 will not play tennis or x_6 is a cashier we can infer that for all x_6, x_6 is an office clerk or x_6 is a cashier. From the fact that for all x_6, if x_6 were an office clerk, then x_6 is not an artist, and that for all x_6, x_6 is an artist we can infer that for all x_6, x_6 is not an office clerk. Finally, from the fact that for all x_6, x_6 is an office clerk or x_6 is a cashier, and that for all x_6, x_6 is not an office clerk we can infer that for all x_6, x_6 is a cashier. Therefore, the answer is yes.