question: Lines l, m, and n are perpendicular bisectors of \triangle P Q R and meet at T. If T Q = 2 x, P T = 3 y - 1, T Q = 2 x, and T R = 8, find z.
  Choices:
  A:3
  B:4
  C:5
  D:6
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: Lines l, m, and n are perpendicular bisectors of \triangle P Q R and meet at T. If T Q = 2 x, P T = 3 y - 1, T Q = 2 x, and T R = 8, find z.
  Choices:
  A:3
  B:4
  C:5
  D:6
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: Lines l, m, and n are perpendicular bisectors of \triangle P Q R and meet at T. If T Q = 2 x, P T = 3 y - 1, T Q = 2 x, and T R = 8, find z.
  Choices:
  A:3
  B:4
  C:5
  D:6
question_for_eval: Lines l, m, and n are perpendicular bisectors of \triangle P Q R and meet at T. If T Q = 2 x, P T = 3 y - 1, T Q = 2 x, and T R = 8, find z.
  Choices:
  A:3
  B:4
  C:5
  D:6