Consider the following premises. There is at least one x_1 for which x_1 will sleep. For all x_1, x_1 will play tennis. For all x_1, if x_1 plays tennis, then x_1 is an artist. Can we infer the following from them? For all x_1, either x_1 is an artist or x_1 will sleep are not true.
 From the fact that for all x_1, if x_1 plays tennis, then x_1 is an artist, and that for all x_1, x_1 will play tennis we can infer that for all x_1, x_1 is an artist. Finally, from the fact that for all x_1, x_1 is an artist, and that there is at least one x_1 for which x_1 will sleep we can infer that there is at least one x_1 for which x_1 is an artist and x_1 will sleep, which contradicts that For all x_1, either x_1 is an artist or x_1 will sleep are not true. Therefore, the answer is no.