input: Write a function to identify whether a given sentence is an 'affirmative' sentence or a 'negative' sentence by checking for negation words. The function returns "Affirmative" if no negation words are found, otherwise it returns "Negative".
  
  assert isAffirmativeorNegative("He always comes late but I dont mind.") == "Negative"
  assert isAffirmativeorNegative("She loves her job.") == "Affirmative"
  assert isAffirmativeorNegative("I cannot go to the party tonight.") == "Negative"
  assert isAffirmativeorNegative("") == "Affirmative"
  assert isAffirmativeorNegative("No one likes that movie.") == "Negative"
output: def isAffirmativeorNegative(sentence):
      negation_words = ["not", "no", "never", "none", "nobody", "nothing", "nowhere", "neither", "nor", "cannot"]
      for word in sentence.split():
          if word.lower() in negation_words:
              return "Negative"
      return "Affirmative"