premise: Hemodialysis Uses an artificial kidney (dialyzer) and a machine to remove water and waste products from the blood stream.
hypothesis: Hemodialysis has a patient’s blood pass through a length of tubing that travels through an artificial kidney machine.
hypothesis_graph_structure: a length of tubing<>travels<>$$$Hemodialysis<>has<>a patient's blood pass through a length of tubing$$$a patient's blood<>pass<>through a length of tubing