input: def extract_words(sentence: str) -> List[str]:
      """Extracts non-vowel words from a sentence.
      >>> extract_words("This machine learning project is challenging.")
      ['machine', 'project', 'is', 'challenging.']
      >>> extract_words("Hello World!")
      ['World!']
      """
output:     vowels = "aeiouAEIOU"
      words = sentence.split()
      result = [word for word in words if not any(char in vowels for char in word)]
      return result