code: def _process_doc(self, doc):
      # NOTE: Some `doc["answerKey"]`s are in numeric string format being one
      # of {'1', '2', '3', '4', '5'}. We map them back to letters.
      num_to_letter = {"1": "A", "2": "B", "3": "C", "4": "D", "5": "E"}
      doc["answerKey"] = num_to_letter.get(
          doc["answerKey"], doc["answerKey"]
      )
      out_doc = {
          "id": doc["id"],
          "query": "Question: " + doc["question"] + "\nAnswer:",
          "choices": doc["choices"]["text"],
          "gold": ["A", "B", "C", "D", "E"].index(doc["answerKey"]),
      }
      return out_doc
  
file_path: lm-evaluation-harness/lm_eval/tasks/arc.py
imports: from lm_eval.base import MultipleChoiceTask
label_desc: Use image node_id 7 for calling the ARCEasy obj's underlying member method code with example usage: obj._process_doc(doc) and returns: out_doc