Consider the following premises. William is running and William is an artist. Sarah is a writer. Can we infer the following from them? If we can, name the inference rule being used: Sarah is a writer or it is windy.
 From the fact that William is running and William is an artist we can infer that William is running via simplification. From the fact that Sarah is a writer, and that William is running we can infer that Sarah is a writer and William is running via conjunction. From the fact that Sarah is a writer and William is running we can infer that Sarah is a writer via simplification. Finally, from the fact that Sarah is a writer we can infer that Sarah is a writer or it is windy via addition. Therefore, the answer is yes.