Consider the following premises. For all y, if y makes tea, then y is taking a plane. For all y, y will make tea if and only if y is an artist. For all y, if y takes a plane, then y is playing tennis. Can we infer the following from them? If we can, name the inference rule being used: There is at least one y for which the fact that y were an artist does not imply that y is playing tennis.
 From the fact that for all y, y will make tea if and only if y is an artist we can infer that for all y, if y were an artist, then y is making tea via universal biconditional elimination. From the fact that for all y, if y were an artist, then y is making tea, and that for all y, if y makes tea, then y is taking a plane we can infer that for all y, if y were an artist, then y is taking a plane via universal transitivity. Finally, from the fact that for all y, if y were an artist, then y is taking a plane, and that for all y, if y takes a plane, then y is playing tennis we can infer that for all y, if y were an artist, then y is playing tennis via universal transitivity, which contradicts that There is at least one y for which the fact that y were an artist does not imply that y is playing tennis. Therefore, the answer is no.