input: def extract_non_vowel_words(sentence: str) -> List[str]:
      """Extract and return a list of words from the given sentence that do not contain any vowels.
      >>> extract_non_vowel_words("This machine learning project is challenging.")
      ['machine', 'learning', 'project', 'is', 'challenging']
      """
output:     words = sentence.split()
      vowels = "aeiouAEIOU"
      non_vowel_words = [word for word in words if all(char not in vowels for char in word)]
      return non_vowel_words