list1 = ['physics', 'chemistry', 1997, 2000]
list2 = [1, 2, 3, 4, 5, 6, 7 ]
print "list1[0]: ", list1[0] #statement 1
print "list1[0]: ", list1[-2] #statement 2
print "list1[-2]: ", list1[1:] #statement 3
print "list2[1:5]: ", list2[1:5] #statement 4
