def METHOD_NAME(columns, target_columns):
  """Create a boolean mask indicating location of target_columns in columns.
  Args:
    columns: (List[string]), list of all columns considered.
    target_columns: (List[string]), columns whose position
      should be masked as 1.
  Returns:
    List[bool]
  """
  target_set = set(target_columns)
  return [x in target_set for x in columns]