Detailed Instructions: In this task, you are given a context paragraph, a question based on that and corresponding answer of a question. Your task is to generate supporting fact/knowledge from context paragraph which helps in answering a given question.
Problem:Canterbury v. Spence (464 F.2d. 772, 782 D.C. Cir. 1972) was a landmark federal case decided by the United States Court of Appeals for the District of Columbia Circuit that significantly reshaped malpractice law in the United States. It established the idea of "informed consent" to medical procedures. Question: Which of these cases established the idea of "informed consent" to medical procedures: Canterbury v. Spence or Obergefell v. Hodges? Answer: Canterbury v. Spence
Solution:
Canterbury v. Spence 464 F.2d.