question: There is an equilateral triangle with two sides 2 x + 11 and 6 x - 9. Find x.
  Choices:
  A:2
  B:5
  C:6
  D:9
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: There is an equilateral triangle with two sides 2 x + 11 and 6 x - 9. Find x.
  Choices:
  A:2
  B:5
  C:6
  D:9
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: There is an equilateral triangle with two sides 2 x + 11 and 6 x - 9. Find x.
  Choices:
  A:2
  B:5
  C:6
  D:9
question_for_eval: There is an equilateral triangle with two sides 2 x + 11 and 6 x - 9. Find x.
  Choices:
  A:2
  B:5
  C:6
  D:9