Consider the following premises. For all y_1, y_1 is an artist. There is at least one y_1 for which y_1 will play squash. For all y_1, if y_1 plays squash, then y_1 is making tea. Can we infer the following from them? There is at least one y_1 for which y_1 is an artist and y_1 will make tea.
 From the fact that for all y_1, if y_1 plays squash, then y_1 is making tea, and that there is at least one y_1 for which y_1 will play squash we can infer that there is at least one y_1 for which y_1 will make tea. Finally, from the fact that for all y_1, y_1 is an artist, and that there is at least one y_1 for which y_1 will make tea we can infer that there is at least one y_1 for which y_1 is an artist and y_1 will make tea. Therefore, the answer is yes.