Consider the following premises. It is sunny and it is cloudy. For all x_18, x_18 will listen to a song. Can we infer the following from them? If we can, name the inference rule being used: It is sunny and Michael is listening to a song.
 From the fact that for all x_18, x_18 will listen to a song we can infer that Michael is listening to a song via universal instantiation. From the fact that it is sunny and it is cloudy we can infer that it is sunny via simplification. Finally, from the fact that it is sunny, and that Michael is listening to a song we can infer that it is sunny and Michael is listening to a song via conjunction. Therefore, the answer is yes.