Consider the following premises. There is at least one x_16 for which x_16 is not poor or x_16 will listen to a song. For all x_16, x_16 will play squash or x_16 will not listen to a song. For all x_16, if x_16 takes a plane, then x_16 is playing squash. For all x_16, x_16 is poor or x_16 will take a plane. Can we infer the following from them? If we can, name the inference rule being used: There is at least one x_16 for which x_16 will play squash or x_16 is excited.
 From the fact that for all x_16, x_16 is poor or x_16 will take a plane, and that there is at least one x_16 for which x_16 is not poor or x_16 will listen to a song we can infer that there is at least one x_16 for which x_16 will take a plane or x_16 will listen to a song via existential resolution. From the fact that for all x_16, x_16 will play squash or x_16 will not listen to a song we can infer that for all x_16, if x_16 listens to a song, then x_16 is playing squash via universal rewriting. From the fact that for all x_16, if x_16 takes a plane, then x_16 is playing squash, that for all x_16, if x_16 listens to a song, then x_16 is playing squash, and that there is at least one x_16 for which x_16 will take a plane or x_16 will listen to a song we can infer that there is at least one x_16 for which x_16 will play squash via existential disjunction elimination. Finally, from the fact that there is at least one x_16 for which x_16 will play squash we can infer that there is at least one x_16 for which x_16 will play squash or x_16 is excited via existential addition. Therefore, the answer is yes.