Why the output of print(list[list[4]]) is 8 when 8 is in index 5?

Question

List = [1, 1, 2, 3, 5, 8, 13]
print(list[list[4]])

8

Answer 1

print ( list [ list[4] ] )
#list[4] = 5

print ( list [ 5 ] )
#list[5] = 8

print (8)

>> 8

Answer 2

thank you for your answer but the output if you print(list[list[4]]) is 8 not 5