Okay, to solve this riddle, you will need to ask yes/no questions. I will answer the questions honestly with a yes, no, or irrelevant.
One day, a man receives a package. He opens it up, and finds an arm inside, which he calmly burries in his back yard. He and the sender of the peculiar parcil do not know eachother well, nor do they have any relation to one another. Yet, this process was very significant, why?