Task: Paraphrasing
Input (English): Question: Which form of dialysis has a patient’s blood pass through a length of tubing that travels through an artificial kidney machine? 
Answer: hemodialysis. 
Sentence: Hemodialysis has a patient’s blood pass through a length of tubing that travels through an artificial kidney machine.
Output (English): An artificial kidney machine is used when patients require hemodialysis; or rather, the process wherein the patient's blood is passed through a length of tubing through the artificial kindney machine.