input: Write a function to extract the non-vowel words in a sentence. If the given sentence is empty then return an empty list.
  assert extract_words("This machine learning project is challenging")==['This', 'machine', 'learning', 'project', 'is', 'challenging']
  assert extract_words("Hello world")==["world"]
  assert extract_words("")==[]
  assert extract_words("The quick brown fox jumps over the lazy dog")==["The", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"]
  assert extract_words("Testing 123")==["Testing", "123"]
output: def extract_words(sentence):
      vowels = "aeiouAEIOU"
      if not sentence:
          return []
      words = sentence.split()
      return [word for word in words if not any(char in vowels for char in word)]