docs: def get_object(tree):
      """Get the object in the tree object.
      
      Method should remove unnecessary letters and words::
  
          the
          a/an
          's
  
      Args:
          tree (Tree): Parsed tree structure
      Returns:
          Resulting string of tree ``(Ex: "red car")``
      """
      if isinstance(tree, Tree):
          if tree.label() == 'DT' or tree.label() == 'POS':
              return ''
          words = []
          for child in tree:
              words.append(get_object(child))
          return ' '.join([_f for _f in words if _f])
      else:
          return tree