input: 
  from typing import List, Any
  
  def predict_class_labels(data: List[float]) -> Any:
      """ Predict the class labels of a given set of data with the features Length, Width, Height, and Weight.
      >>> predict_class_labels([1.0, 2.0, 3.0, 4.0])
      ['ClassA']
      >>> predict_class_labels([5.0, 6.0, 7.0, 8.0])
      ['ClassB']
      """
  
output:     if data[0] < 3.0:
          return ['ClassA']
      else:
          return ['ClassB']