input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Most accurate method of determination of working length in a tooth with open apex:   (A) Moisture on paperpoint   (B) Electronic apex locator   (C) Other digital method   (D) Both 1 and 2
output: ['(A) Moisture on paperpoint <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Moisture on paperpoint  (B) Electronic apex locator  (C) Other digital method  (D) Both 1 and 2 <> possible answers', '  Most accurate method of determination of working length in a tooth with open apex: <> context']