input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** In CRISPR-Cas 9 system, which repair mechanism is used for genome editing?   (A) Non homologous end repair   (B) Homologous repair   (C) Mismatch repair   (D) Nucleotide excision repair
output: ['(A) Non homologous end repair <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Non homologous end repair  (B) Homologous repair  (C) Mismatch repair  (D) Nucleotide excision repair <> possible answers', '  In CRISPR-Cas 9 system, which repair mechanism is used for genome editing? <> context']