input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which of the following is not a technique for protein precipitation?   (A) Trichloroacetic acid   (B) Heat precipitation   (C) Isoelectric point method   (D) Titration with reducing sugar
output: ['(D) Titration with reducing sugar <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Trichloroacetic acid  (B) Heat precipitation  (C) Isoelectric point method  (D) Titration with reducing sugar <> possible answers', '  Which of the following is not a technique for protein precipitation? <> context']