question: Line l and m are parallel. Find x.
  Choices:
  A:5.6
  B:18
  C:20
  D:22
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: Line l and m are parallel. Find x.
  Choices:
  A:5.6
  B:18
  C:20
  D:22
query_cot: Please first conduct reasoning, and then answer the question and provide the correct option letter, e.g., A, B, C, D, at the end.
  Question: Line l and m are parallel. Find x.
  Choices:
  A:5.6
  B:18
  C:20
  D:22
question_for_eval: Line l and m are parallel. Find x.
  Choices:
  A:5.6
  B:18
  C:20
  D:22