question: The degrees of each angle are shown in the figure, two of the angles are the same and both are x. If x = 20 and y = 30 in the figure above, what is the value of z?
  Choices:
  A.60
  B.70
  C.80
  D.90
  E.100
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: The degrees of each angle are shown in the figure, two of the angles are the same and both are x. If x = 20 and y = 30 in the figure above, what is the value of z?
  Choices:
  A.60
  B.70
  C.80
  D.90
  E.100
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: The degrees of each angle are shown in the figure, two of the angles are the same and both are x. If x = 20 and y = 30 in the figure above, what is the value of z?
  Choices:
  A.60
  B.70
  C.80
  D.90
  E.100
question_for_eval: The degrees of each angle are shown in the figure, two of the angles are the same and both are x. If x = 20 and y = 30 in the figure above, what is the value of z?
  Choices:
  A.60
  B.70
  C.80
  D.90
  E.100