input: from typing import List
  
  def predict_labels(features: List[List[float]]) -> List[str]:
      """
      Develop a Python function to predict the class labels of a given set of data.
  
      The dataset contains 4 features: Length, Width, Height, and Weight.
  
      >>> predict_labels([[1.0, 2.0, 3.0, 4.0]])
      ['ClassA']
      >>> predict_labels([[5.0, 6.0, 7.0, 8.0], [1.5, 2.5, 3.5, 4.5]])
      ['ClassB', 'ClassA']
      """
output:     labels = []
      for feature in features:
          length, width, height, weight = feature
          if length < 2.0 and width < 3.0 and height < 4.0 and weight < 5.0:
              labels.append('ClassA')
          else:
              labels.append('ClassB')
      return labels