input: Write a python function to sort unique words from a sentence.
  assert sort_unique_words("This sentence contains a handful of words") == ['This', 'a', 'contains', 'handful', 'of', 'sentence', 'words']
  assert sort_unique_words("Hello world world hello") == ['Hello', 'hello', 'world']
  assert sort_unique_words("Sorting words in unique manner") == ['Sorting', 'in', 'manner', 'unique', 'words']
output: def sort_unique_words(sentence):
      words = sentence.split()
      unique_words = list(set(words))
      unique_words.sort()
      return unique_words