question: AB = 2.0, BC = 1.0, then the value of sinB is ()
  Choices:
  A:\frac{1}{2}
  B:\frac{√{2}}{2}
  C:\frac{√{3}}{2}
  D:2
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: AB = 2.0, BC = 1.0, then the value of sinB is ()
  Choices:
  A:\frac{1}{2}
  B:\frac{√{2}}{2}
  C:\frac{√{3}}{2}
  D:2
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: AB = 2.0, BC = 1.0, then the value of sinB is ()
  Choices:
  A:\frac{1}{2}
  B:\frac{√{2}}{2}
  C:\frac{√{3}}{2}
  D:2
question_for_eval: AB = 2.0, BC = 1.0, then the value of sinB is ()
  Choices:
  A:\frac{1}{2}
  B:\frac{√{2}}{2}
  C:\frac{√{3}}{2}
  D:2