Consider the following premises. For all x_6, if x_6 makes tea, then x_6 is an electrician. For all x_6, if x_6 takes a plane, then x_6 is playing tennis. For all x_6, x_6 will play tennis or x_6 is not an electrician. There is at least one x_6 for which x_6 will make tea or x_6 will take a plane. Can we infer the following from them? For all x_6, x_6 will not play tennis.
 From the fact that for all x_6, x_6 will play tennis or x_6 is not an electrician we can infer that for all x_6, if x_6 were an electrician, then x_6 is playing tennis. From the fact that for all x_6, if x_6 makes tea, then x_6 is an electrician, and that for all x_6, if x_6 were an electrician, then x_6 is playing tennis we can infer that for all x_6, if x_6 makes tea, then x_6 is playing tennis. Finally, from the fact that for all x_6, if x_6 makes tea, then x_6 is playing tennis, that for all x_6, if x_6 takes a plane, then x_6 is playing tennis, and that there is at least one x_6 for which x_6 will make tea or x_6 will take a plane we can infer that there is at least one x_6 for which x_6 will play tennis, which contradicts that For all x_6, x_6 will not play tennis. Therefore, the answer is no.