input: Write a function to determine if a given sentence is an 'affirmative' sentence or a 'negative' sentence. Return 'Affirmative' if there are no negation words in the sentence, otherwise return 'Negative'.
  
  
  def isAffirmativeorNegative(sentence):
      negationwords = findNegation(sentence)
      if len(negationwords) == 0:
          return "Affirmative"
      else:
          return "Negative"
  
  assert isAffirmativeorNegative("He always comes late but I dont mind.") == "Negative"
  assert isAffirmativeorNegative("She is always on time.") == "Affirmative"
  assert isAffirmativeorNegative("I have no issues with it.") == "Affirmative"
  assert isAffirmativeorNegative("It is not possible to complete the task.") == "Negative"
  
output: def isAffirmativeorNegative(sentence):
      negationwords = ["not", "no", "never", "dont", "doesnt", "cant", "wont", "isnt", "arent"]
      for word in sentence.split():
          if word.lower() in negationwords:
              return "Negative"
      return "Affirmative"