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