code: def BaroniUrbaniBuserII_calc(TP, FP, FN, TN):
      """
      Calculate Baroni-Urbani & Buser II.
  
      :param TP: true positive
      :type TP: int
      :param TN: true negative
      :type TN: int
      :param FP: false positive
      :type FP: int
      :param FN: false negative
      :type FN: int
      :return: Baroni-Urbani & Buser II as float
      """
      try:
          part1 = math.sqrt(TP * TN) + TP - FP - FN
          part2 = math.sqrt(TP * TN) + TP + FP + FN
          return part1 / part2
      except Exception:
          return "None"
  
imports: from __future__ import division
  from enum import Enum
  import math
label_desc: Use image node_id 5 for calling a global function with example usage: BaroniUrbaniBuserII_calc(TP, FP, FN, TN) and returns: unknown, str