Find Maximum array comparing second index from array in python 3

Question

Input :

list = [[(0, 1, 2, 2), 0.0], [(0, 1, 1, 3), 0.0], [(0, 2, 2, 3), 1.6], [(0, 2, 1, 4), -0.4], [(1, 0, 3, 1), 0.0], [(1, 0, 2, 2), 0.0], [(1, 1, 3, 0),