question: Below is the graph of a trigonometric function. What is the period of the function? Give an exact value.
  $+\stackrel{x}{=}$ units
  
query_wo: Please directly answer the question and provide the final value, e.g., 1, 2.5, 300.
  Question: Below is the graph of a trigonometric function. What is the period of the function? Give an exact value.
  $+\stackrel{x}{=}$ units
  
query_cot: Please first conduct reasoning, and then answer the question and provide the final value, e.g., 1, 2.5, 300, at the end.
  Question: Below is the graph of a trigonometric function. What is the period of the function? Give an exact value.
  $+\stackrel{x}{=}$ units
  
question_for_eval: Below is the graph of a trigonometric function. What is the period of the function? Give an exact value.
  $+\stackrel{x}{=}$ units
  