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): Hemodialysis is the process by which a patient's blood passes through a length of tubing, and then through an artificial kidney machine.