Complex sentence: Later, a pig farmer and avid field recorder who is known as the Sampler and has discovered that the worms are attracted by infrasonics, lures Kris to his farm and sets up a transfusion through which the worms leave her and enter the pig.
Split into simpler sentences: Later, a pig farmer and avid field recorder (known as the Sampler) lures Kris to his farm using infrasonics, which attract the worms. The Sampler sets up a transfusion through which the worms leave Kris and enter the pig.