code: def get_staff_row_position(img):
      found = 0
      row_position = -1
      for i in range(img.shape[0]):
          for j in range(img.shape[1]):
              if img[i][j] == 0:
                  row_position = i
                  found = 1
                  break
          if found == 1:
              break
      return row_position
  
file_path: Mozart/src/staff.py
imports: from rle import *
  from commonfunctions import *
  from collections import Counter
label_desc: Use image node_id 7 for calling a global function with example usage: get_staff_row_position(img) and returns: row_position