code: def _create_examples(cls, lines, set_type):
      potential_label_map = {
          "1": "A",
          "2": "B",
          "3": "C",
          "4": "D",
          "5": "E",
      }
      NUM_CHOICES = len(potential_label_map)
      examples = []
      for i, line in enumerate(lines):
          label = line["answerKey"]
          if label in potential_label_map:
              label = potential_label_map[label]
          choice_list = [d for d in line["choices"]["text"]]
          filler_choice_list = [
              "." for i in range(NUM_CHOICES - len(choice_list))
          ]
          choice_list = choice_list + filler_choice_list
          assert len(choice_list) == NUM_CHOICES
  
          examples.append(
              Example(
                  guid="%s-%s" % (set_type, i),
                  prompt=line["question"],
                  choice_list=choice_list,
                  label=label,
              )
          )
      return examples
  
file_path: jiant/jiant/tasks/lib/arc_challenge.py
imports: from dataclasses import dataclass
  from jiant.tasks.lib.templates.shared import labels_to_bimap
  from jiant.tasks.lib.templates import multiple_choice
  from jiant.utils.python.io import read_json_lines
label_desc: Use image node_id 4 for calling the ArcChallengeTask obj's underlying member method code with example usage: obj._create_examples(cls, lines, set_type) and returns: examples