text: '''6. Write a Python program to find the list in a list of lists whose sum of elements is the highest. 
  Sample lists: [1,2,3], [4,5,6], [10,11,12], [7,8,9]
  Expected Output: [10, 11, 12]'''
  
  all_list = [[1,2,3], [4,5,6], [10,11,12], [7,8,9]]
  print(max(all_list, key=sum))