term = "message" # term we want to search for
input = input() # read input from user

words = input.split() # split the sentence into individual words

if term in words: # see if one of the words in the input is the word we want
    do_stuff() # the final result (what happens when there is the string included in the output)
else:
    print("The term '" + term + "' has not been included in the input! :( ")