'''
write a function that has two string parameters s1 and s2, and returns
true if if s1 contains s2
'''
s1 = 'rainbow'
s2 = 'bow'
expected = True

def contains(s1, s2):
    # write your code here
    result = s2 in s1
    return result
  
actual = contains(s1, s2)
print(actual == expected)